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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/244637">244637</a></dd>
<dt>Author</dt> <dd>bshafiei@apple.com</dd>
<dt>Date</dt> <dd>2019-04-24 23:42:33 -0700 (Wed, 24 Apr 2019)</dd>
</dl>

<h3>Log Message</h3>
<pre>Cherry-pick <a href="http://trac.webkit.org/projects/webkit/changeset/244174">r244174</a>. rdar://problem/28160396

    Cherry-pick <a href="http://trac.webkit.org/projects/webkit/changeset/243841">r243841</a>. rdar://problem/49725678

        -apple-trailing-word is needed for browser detection
        https://bugs.webkit.org/show_bug.cgi?id=196575

        Unreviewed.

        PerformanceTests:

        * MotionMark/resources/debug-runner/motionmark.css:
        (#intro .start-benchmark p):

        Source/JavaScriptCore:

        * Configurations/FeatureDefines.xcconfig:

        Source/WebCore:

        This is an unreviewed partial revert of <a href="http://trac.webkit.org/projects/webkit/changeset/243819">r243819</a>. Turns out there are some websites
        which use this property to do browser detection. So, we need to continue to parse
        the property, but we don't need the property to do anything.

        Test: fast/text/trailing-word-detection.html

        * Configurations/FeatureDefines.xcconfig:
        * css/CSSComputedStyleDeclaration.cpp:
        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
        * css/CSSPrimitiveValueMappings.h:
        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
        * css/CSSProperties.json:
        * css/CSSValueKeywords.in:
        * css/parser/CSSParserFastPaths.cpp:
        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
        * rendering/style/RenderStyle.h:
        (WebCore::RenderStyle::trailingWord const):
        (WebCore::RenderStyle::setTrailingWord):
        (WebCore::RenderStyle::initialTrailingWord):
        * rendering/style/RenderStyleConstants.h:

        Source/WebCore/PAL:

        * Configurations/FeatureDefines.xcconfig:

        Source/WebKit:

        * Configurations/FeatureDefines.xcconfig:

        Source/WebKitLegacy/mac:

        * Configurations/FeatureDefines.xcconfig:

        Tools:

        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:

        LayoutTests:

        * fast/text/trailing-word-detection-expected.txt: Added.
        * fast/text/trailing-word-detection.html: Added.
        * platform/gtk/TestExpectations:
        * platform/win/TestExpectations:

        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc

    git-svn-id: https://svn.webkit.org/repository/webkit/branches/safari-607-branch@244174 268f45cc-cd09-0410-ab3c-d52691b4dbfc</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari607260branchLayoutTestsChangeLog">branches/safari-607.2.6.0-branch/LayoutTests/ChangeLog</a></li>
<li><a href="#branchessafari607260branchLayoutTestsplatformgtkTestExpectations">branches/safari-607.2.6.0-branch/LayoutTests/platform/gtk/TestExpectations</a></li>
<li><a href="#branchessafari607260branchLayoutTestsplatformwinTestExpectations">branches/safari-607.2.6.0-branch/LayoutTests/platform/win/TestExpectations</a></li>
<li><a href="#branchessafari607260branchPerformanceTestsChangeLog">branches/safari-607.2.6.0-branch/PerformanceTests/ChangeLog</a></li>
<li><a href="#branchessafari607260branchPerformanceTestsMotionMarkresourcesdebugrunnermotionmarkcss">branches/safari-607.2.6.0-branch/PerformanceTests/MotionMark/resources/debug-runner/motionmark.css</a></li>
<li><a href="#branchessafari607260branchSourceJavaScriptCoreChangeLog">branches/safari-607.2.6.0-branch/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#branchessafari607260branchSourceJavaScriptCoreConfigurationsFeatureDefinesxcconfig">branches/safari-607.2.6.0-branch/Source/JavaScriptCore/Configurations/FeatureDefines.xcconfig</a></li>
<li><a href="#branchessafari607260branchSourceWebCoreChangeLog">branches/safari-607.2.6.0-branch/Source/WebCore/ChangeLog</a></li>
<li><a href="#branchessafari607260branchSourceWebCoreConfigurationsFeatureDefinesxcconfig">branches/safari-607.2.6.0-branch/Source/WebCore/Configurations/FeatureDefines.xcconfig</a></li>
<li><a href="#branchessafari607260branchSourceWebCorePALChangeLog">branches/safari-607.2.6.0-branch/Source/WebCore/PAL/ChangeLog</a></li>
<li><a href="#branchessafari607260branchSourceWebCorePALConfigurationsFeatureDefinesxcconfig">branches/safari-607.2.6.0-branch/Source/WebCore/PAL/Configurations/FeatureDefines.xcconfig</a></li>
<li><a href="#branchessafari607260branchSourceWebCorecssCSSComputedStyleDeclarationcpp">branches/safari-607.2.6.0-branch/Source/WebCore/css/CSSComputedStyleDeclaration.cpp</a></li>
<li><a href="#branchessafari607260branchSourceWebCorecssCSSPrimitiveValueMappingsh">branches/safari-607.2.6.0-branch/Source/WebCore/css/CSSPrimitiveValueMappings.h</a></li>
<li><a href="#branchessafari607260branchSourceWebCorecssCSSPropertiesjson">branches/safari-607.2.6.0-branch/Source/WebCore/css/CSSProperties.json</a></li>
<li><a href="#branchessafari607260branchSourceWebCorecssCSSValueKeywordsin">branches/safari-607.2.6.0-branch/Source/WebCore/css/CSSValueKeywords.in</a></li>
<li><a href="#branchessafari607260branchSourceWebCorecssparserCSSParserFastPathscpp">branches/safari-607.2.6.0-branch/Source/WebCore/css/parser/CSSParserFastPaths.cpp</a></li>
<li><a href="#branchessafari607260branchSourceWebCorerenderingstyleRenderStyleh">branches/safari-607.2.6.0-branch/Source/WebCore/rendering/style/RenderStyle.h</a></li>
<li><a href="#branchessafari607260branchSourceWebCorerenderingstyleRenderStyleConstantsh">branches/safari-607.2.6.0-branch/Source/WebCore/rendering/style/RenderStyleConstants.h</a></li>
<li><a href="#branchessafari607260branchSourceWebKitChangeLog">branches/safari-607.2.6.0-branch/Source/WebKit/ChangeLog</a></li>
<li><a href="#branchessafari607260branchSourceWebKitConfigurationsFeatureDefinesxcconfig">branches/safari-607.2.6.0-branch/Source/WebKit/Configurations/FeatureDefines.xcconfig</a></li>
<li><a href="#branchessafari607260branchSourceWebKitLegacymacChangeLog">branches/safari-607.2.6.0-branch/Source/WebKitLegacy/mac/ChangeLog</a></li>
<li><a href="#branchessafari607260branchSourceWebKitLegacymacConfigurationsFeatureDefinesxcconfig">branches/safari-607.2.6.0-branch/Source/WebKitLegacy/mac/Configurations/FeatureDefines.xcconfig</a></li>
<li><a href="#branchessafari607260branchToolsChangeLog">branches/safari-607.2.6.0-branch/Tools/ChangeLog</a></li>
<li><a href="#branchessafari607260branchToolsTestWebKitAPIConfigurationsFeatureDefinesxcconfig">branches/safari-607.2.6.0-branch/Tools/TestWebKitAPI/Configurations/FeatureDefines.xcconfig</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#branchessafari607260branchLayoutTestsfasttexttrailingworddetectionexpectedtxt">branches/safari-607.2.6.0-branch/LayoutTests/fast/text/trailing-word-detection-expected.txt</a></li>
<li><a href="#branchessafari607260branchLayoutTestsfasttexttrailingworddetectionhtml">branches/safari-607.2.6.0-branch/LayoutTests/fast/text/trailing-word-detection.html</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari607260branchLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/LayoutTests/ChangeLog (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/LayoutTests/ChangeLog   2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/LayoutTests/ChangeLog      2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -1,5 +1,157 @@
</span><span class="cx"> 2019-04-24  Babak Shafiei  <bshafiei@apple.com>
</span><span class="cx"> 
</span><ins>+        Cherry-pick r244174. rdar://problem/28160396
+
+    Cherry-pick r243841. rdar://problem/49725678
+    
+        -apple-trailing-word is needed for browser detection
+        https://bugs.webkit.org/show_bug.cgi?id=196575
+    
+        Unreviewed.
+    
+        PerformanceTests:
+    
+        * MotionMark/resources/debug-runner/motionmark.css:
+        (#intro .start-benchmark p):
+    
+        Source/JavaScriptCore:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebCore:
+    
+        This is an unreviewed partial revert of r243819. Turns out there are some websites
+        which use this property to do browser detection. So, we need to continue to parse
+        the property, but we don't need the property to do anything.
+    
+        Test: fast/text/trailing-word-detection.html
+    
+        * Configurations/FeatureDefines.xcconfig:
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+        * css/CSSPrimitiveValueMappings.h:
+        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+        * css/CSSProperties.json:
+        * css/CSSValueKeywords.in:
+        * css/parser/CSSParserFastPaths.cpp:
+        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+        * rendering/style/RenderStyle.h:
+        (WebCore::RenderStyle::trailingWord const):
+        (WebCore::RenderStyle::setTrailingWord):
+        (WebCore::RenderStyle::initialTrailingWord):
+        * rendering/style/RenderStyleConstants.h:
+    
+        Source/WebCore/PAL:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebKit:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebKitLegacy/mac:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Tools:
+    
+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+    
+        LayoutTests:
+    
+        * fast/text/trailing-word-detection-expected.txt: Added.
+        * fast/text/trailing-word-detection.html: Added.
+        * platform/gtk/TestExpectations:
+        * platform/win/TestExpectations:
+    
+        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+    
+    git-svn-id: https://svn.webkit.org/repository/webkit/branches/safari-607-branch@244174 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+    2019-04-10  Alan Coon  <alancoon@apple.com>
+
+            Cherry-pick r243841. rdar://problem/49725678
+
+        -apple-trailing-word is needed for browser detection
+        https://bugs.webkit.org/show_bug.cgi?id=196575
+
+        Unreviewed.
+
+        PerformanceTests:
+
+        * MotionMark/resources/debug-runner/motionmark.css:
+        (#intro .start-benchmark p):
+
+        Source/JavaScriptCore:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebCore:
+
+        This is an unreviewed partial revert of r243819. Turns out there are some websites
+        which use this property to do browser detection. So, we need to continue to parse
+        the property, but we don't need the property to do anything.
+
+        Test: fast/text/trailing-word-detection.html
+
+        * Configurations/FeatureDefines.xcconfig:
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+        * css/CSSPrimitiveValueMappings.h:
+        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+        * css/CSSProperties.json:
+        * css/CSSValueKeywords.in:
+        * css/parser/CSSParserFastPaths.cpp:
+        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+        * rendering/style/RenderStyle.h:
+        (WebCore::RenderStyle::trailingWord const):
+        (WebCore::RenderStyle::setTrailingWord):
+        (WebCore::RenderStyle::initialTrailingWord):
+        * rendering/style/RenderStyleConstants.h:
+
+        Source/WebCore/PAL:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebKit:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebKitLegacy/mac:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Tools:
+
+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+
+        LayoutTests:
+
+        * fast/text/trailing-word-detection-expected.txt: Added.
+        * fast/text/trailing-word-detection.html: Added.
+        * platform/gtk/TestExpectations:
+        * platform/win/TestExpectations:
+
+        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+        2019-04-03  Myles C. Maxfield  <mmaxfield@apple.com>
+
+                -apple-trailing-word is needed for browser detection
+                https://bugs.webkit.org/show_bug.cgi?id=196575
+
+                Unreviewed.
+
+                * fast/text/trailing-word-detection-expected.txt: Added.
+                * fast/text/trailing-word-detection.html: Added.
+                * platform/gtk/TestExpectations:
+                * platform/win/TestExpectations:
+
+2019-04-24  Babak Shafiei  <bshafiei@apple.com>
+
</ins><span class="cx">         Cherry-pick r244173. rdar://problem/28160396
</span><span class="cx"> 
</span><span class="cx">     Cherry-pick r243819. rdar://problem/49725678
</span></span></pre></div>
<a id="branchessafari607260branchLayoutTestsfasttexttrailingworddetectionexpectedtxt"></a>
<div class="addfile"><h4>Added: branches/safari-607.2.6.0-branch/LayoutTests/fast/text/trailing-word-detection-expected.txt (0 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/LayoutTests/fast/text/trailing-word-detection-expected.txt                              (rev 0)
+++ branches/safari-607.2.6.0-branch/LayoutTests/fast/text/trailing-word-detection-expected.txt 2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -0,0 +1,6 @@
</span><ins>+PASS '-apple-trailing-word' in element.style is true
+PASS window.getComputedStyle(element).getPropertyValue('color') is "rgb(0, 128, 0)"
+PASS successfullyParsed is true
+
+TEST COMPLETE
+
</ins></span></pre></div>
<a id="branchessafari607260branchLayoutTestsfasttexttrailingworddetectionhtml"></a>
<div class="addfile"><h4>Added: branches/safari-607.2.6.0-branch/LayoutTests/fast/text/trailing-word-detection.html (0 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/LayoutTests/fast/text/trailing-word-detection.html                              (rev 0)
+++ branches/safari-607.2.6.0-branch/LayoutTests/fast/text/trailing-word-detection.html 2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -0,0 +1,22 @@
</span><ins>+<!DOCTYPE html>
+<html>
+<head>
+<script src="../../resources/js-test-pre.js"></script>
+<style>
+@supports (-apple-trailing-word: auto) {
+    #test {
+        color: rgb(0, 128, 0);
+    }
+}
+</style>
+</head>
+<body>
+<div id="test"></div>
+<script>
+let element = document.getElementById("test");
+shouldBeTrue("'-apple-trailing-word' in element.style");
+shouldBeEqualToString("window.getComputedStyle(element).getPropertyValue('color')", "rgb(0, 128, 0)");
+</script>
+<script src="../../resources/js-test-post.js"></script>
+</body>
+</html>
</ins></span></pre></div>
<a id="branchessafari607260branchLayoutTestsplatformgtkTestExpectations"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/LayoutTests/platform/gtk/TestExpectations (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/LayoutTests/platform/gtk/TestExpectations       2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/LayoutTests/platform/gtk/TestExpectations  2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -3158,6 +3158,7 @@
</span><span class="cx"> 
</span><span class="cx"> webkit.org/b/160248 fast/text/combining-mark-paint.html [ ImageOnlyFailure ]
</span><span class="cx"> webkit.org/b/160248 fast/text/synthetic-bold-transformed.html [ ImageOnlyFailure ]
</span><ins>+webkit.org/b/160248 fast/text/trailing-word-detection.html [ Failure ]
</ins><span class="cx"> 
</span><span class="cx"> webkit.org/b/160249 fast/shrink-wrap/rect-shrink-wrap.html [ ImageOnlyFailure ]
</span><span class="cx"> 
</span></span></pre></div>
<a id="branchessafari607260branchLayoutTestsplatformwinTestExpectations"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/LayoutTests/platform/win/TestExpectations (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/LayoutTests/platform/win/TestExpectations       2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/LayoutTests/platform/win/TestExpectations  2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -3000,6 +3000,7 @@
</span><span class="cx"> fast/ruby/ruby-expansion-cjk-5.html [ ImageOnlyFailure ]
</span><span class="cx"> fast/text/combining-mark-paint.html [ ImageOnlyFailure ]
</span><span class="cx"> fast/text/synthetic-bold-transformed.html [ ImageOnlyFailure ]
</span><ins>+fast/text/trailing-word-detection.html [ Failure ]
</ins><span class="cx"> 
</span><span class="cx"> # TestRunner::addChromeInputField() and focusWebView() not implemented
</span><span class="cx"> fast/forms/focus-option-control-on-page.html [ Skip ]
</span></span></pre></div>
<a id="branchessafari607260branchPerformanceTestsChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/PerformanceTests/ChangeLog (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/PerformanceTests/ChangeLog      2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/PerformanceTests/ChangeLog 2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -1,3 +1,153 @@
</span><ins>+2019-04-24  Babak Shafiei  <bshafiei@apple.com>
+
+        Cherry-pick r244174. rdar://problem/28160396
+
+    Cherry-pick r243841. rdar://problem/49725678
+    
+        -apple-trailing-word is needed for browser detection
+        https://bugs.webkit.org/show_bug.cgi?id=196575
+    
+        Unreviewed.
+    
+        PerformanceTests:
+    
+        * MotionMark/resources/debug-runner/motionmark.css:
+        (#intro .start-benchmark p):
+    
+        Source/JavaScriptCore:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebCore:
+    
+        This is an unreviewed partial revert of r243819. Turns out there are some websites
+        which use this property to do browser detection. So, we need to continue to parse
+        the property, but we don't need the property to do anything.
+    
+        Test: fast/text/trailing-word-detection.html
+    
+        * Configurations/FeatureDefines.xcconfig:
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+        * css/CSSPrimitiveValueMappings.h:
+        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+        * css/CSSProperties.json:
+        * css/CSSValueKeywords.in:
+        * css/parser/CSSParserFastPaths.cpp:
+        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+        * rendering/style/RenderStyle.h:
+        (WebCore::RenderStyle::trailingWord const):
+        (WebCore::RenderStyle::setTrailingWord):
+        (WebCore::RenderStyle::initialTrailingWord):
+        * rendering/style/RenderStyleConstants.h:
+    
+        Source/WebCore/PAL:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebKit:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebKitLegacy/mac:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Tools:
+    
+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+    
+        LayoutTests:
+    
+        * fast/text/trailing-word-detection-expected.txt: Added.
+        * fast/text/trailing-word-detection.html: Added.
+        * platform/gtk/TestExpectations:
+        * platform/win/TestExpectations:
+    
+        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+    
+    git-svn-id: https://svn.webkit.org/repository/webkit/branches/safari-607-branch@244174 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+    2019-04-10  Alan Coon  <alancoon@apple.com>
+
+            Cherry-pick r243841. rdar://problem/49725678
+
+        -apple-trailing-word is needed for browser detection
+        https://bugs.webkit.org/show_bug.cgi?id=196575
+
+        Unreviewed.
+
+        PerformanceTests:
+
+        * MotionMark/resources/debug-runner/motionmark.css:
+        (#intro .start-benchmark p):
+
+        Source/JavaScriptCore:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebCore:
+
+        This is an unreviewed partial revert of r243819. Turns out there are some websites
+        which use this property to do browser detection. So, we need to continue to parse
+        the property, but we don't need the property to do anything.
+
+        Test: fast/text/trailing-word-detection.html
+
+        * Configurations/FeatureDefines.xcconfig:
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+        * css/CSSPrimitiveValueMappings.h:
+        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+        * css/CSSProperties.json:
+        * css/CSSValueKeywords.in:
+        * css/parser/CSSParserFastPaths.cpp:
+        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+        * rendering/style/RenderStyle.h:
+        (WebCore::RenderStyle::trailingWord const):
+        (WebCore::RenderStyle::setTrailingWord):
+        (WebCore::RenderStyle::initialTrailingWord):
+        * rendering/style/RenderStyleConstants.h:
+
+        Source/WebCore/PAL:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebKit:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebKitLegacy/mac:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Tools:
+
+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+
+        LayoutTests:
+
+        * fast/text/trailing-word-detection-expected.txt: Added.
+        * fast/text/trailing-word-detection.html: Added.
+        * platform/gtk/TestExpectations:
+        * platform/win/TestExpectations:
+
+        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+        2019-04-03  Myles C. Maxfield  <mmaxfield@apple.com>
+
+                -apple-trailing-word is needed for browser detection
+                https://bugs.webkit.org/show_bug.cgi?id=196575
+
+                Unreviewed.
+
+                * MotionMark/resources/debug-runner/motionmark.css:
+                (#intro .start-benchmark p):
+
</ins><span class="cx"> 2019-04-24  Alan Coon  <alancoon@apple.com>
</span><span class="cx"> 
</span><span class="cx">         Revert r244174. rdar://problem/28160396
</span></span></pre></div>
<a id="branchessafari607260branchPerformanceTestsMotionMarkresourcesdebugrunnermotionmarkcss"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/PerformanceTests/MotionMark/resources/debug-runner/motionmark.css (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/PerformanceTests/MotionMark/resources/debug-runner/motionmark.css       2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/PerformanceTests/MotionMark/resources/debug-runner/motionmark.css  2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -209,7 +209,6 @@
</span><span class="cx"> #intro .start-benchmark p {
</span><span class="cx">     color: hsl(11, 72%, 50%);
</span><span class="cx">     margin-bottom: 1em;
</span><del>-    -apple-trailing-word: -apple-partially-balanced;
</del><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> #intro .start-benchmark button {
</span></span></pre></div>
<a id="branchessafari607260branchSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/JavaScriptCore/ChangeLog (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/JavaScriptCore/ChangeLog 2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/JavaScriptCore/ChangeLog    2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -1,5 +1,154 @@
</span><span class="cx"> 2019-04-24  Babak Shafiei  <bshafiei@apple.com>
</span><span class="cx"> 
</span><ins>+        Cherry-pick r244174. rdar://problem/28160396
+
+    Cherry-pick r243841. rdar://problem/49725678
+    
+        -apple-trailing-word is needed for browser detection
+        https://bugs.webkit.org/show_bug.cgi?id=196575
+    
+        Unreviewed.
+    
+        PerformanceTests:
+    
+        * MotionMark/resources/debug-runner/motionmark.css:
+        (#intro .start-benchmark p):
+    
+        Source/JavaScriptCore:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebCore:
+    
+        This is an unreviewed partial revert of r243819. Turns out there are some websites
+        which use this property to do browser detection. So, we need to continue to parse
+        the property, but we don't need the property to do anything.
+    
+        Test: fast/text/trailing-word-detection.html
+    
+        * Configurations/FeatureDefines.xcconfig:
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+        * css/CSSPrimitiveValueMappings.h:
+        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+        * css/CSSProperties.json:
+        * css/CSSValueKeywords.in:
+        * css/parser/CSSParserFastPaths.cpp:
+        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+        * rendering/style/RenderStyle.h:
+        (WebCore::RenderStyle::trailingWord const):
+        (WebCore::RenderStyle::setTrailingWord):
+        (WebCore::RenderStyle::initialTrailingWord):
+        * rendering/style/RenderStyleConstants.h:
+    
+        Source/WebCore/PAL:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebKit:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebKitLegacy/mac:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Tools:
+    
+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+    
+        LayoutTests:
+    
+        * fast/text/trailing-word-detection-expected.txt: Added.
+        * fast/text/trailing-word-detection.html: Added.
+        * platform/gtk/TestExpectations:
+        * platform/win/TestExpectations:
+    
+        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+    
+    git-svn-id: https://svn.webkit.org/repository/webkit/branches/safari-607-branch@244174 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+    2019-04-10  Alan Coon  <alancoon@apple.com>
+
+            Cherry-pick r243841. rdar://problem/49725678
+
+        -apple-trailing-word is needed for browser detection
+        https://bugs.webkit.org/show_bug.cgi?id=196575
+
+        Unreviewed.
+
+        PerformanceTests:
+
+        * MotionMark/resources/debug-runner/motionmark.css:
+        (#intro .start-benchmark p):
+
+        Source/JavaScriptCore:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebCore:
+
+        This is an unreviewed partial revert of r243819. Turns out there are some websites
+        which use this property to do browser detection. So, we need to continue to parse
+        the property, but we don't need the property to do anything.
+
+        Test: fast/text/trailing-word-detection.html
+
+        * Configurations/FeatureDefines.xcconfig:
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+        * css/CSSPrimitiveValueMappings.h:
+        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+        * css/CSSProperties.json:
+        * css/CSSValueKeywords.in:
+        * css/parser/CSSParserFastPaths.cpp:
+        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+        * rendering/style/RenderStyle.h:
+        (WebCore::RenderStyle::trailingWord const):
+        (WebCore::RenderStyle::setTrailingWord):
+        (WebCore::RenderStyle::initialTrailingWord):
+        * rendering/style/RenderStyleConstants.h:
+
+        Source/WebCore/PAL:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebKit:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebKitLegacy/mac:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Tools:
+
+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+
+        LayoutTests:
+
+        * fast/text/trailing-word-detection-expected.txt: Added.
+        * fast/text/trailing-word-detection.html: Added.
+        * platform/gtk/TestExpectations:
+        * platform/win/TestExpectations:
+
+        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+        2019-04-03  Myles C. Maxfield  <mmaxfield@apple.com>
+
+                -apple-trailing-word is needed for browser detection
+                https://bugs.webkit.org/show_bug.cgi?id=196575
+
+                Unreviewed.
+
+                * Configurations/FeatureDefines.xcconfig:
+
+2019-04-24  Babak Shafiei  <bshafiei@apple.com>
+
</ins><span class="cx">         Cherry-pick r244173. rdar://problem/28160396
</span><span class="cx"> 
</span><span class="cx">     Cherry-pick r243819. rdar://problem/49725678
</span></span></pre></div>
<a id="branchessafari607260branchSourceJavaScriptCoreConfigurationsFeatureDefinesxcconfig"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/JavaScriptCore/Configurations/FeatureDefines.xcconfig (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/JavaScriptCore/Configurations/FeatureDefines.xcconfig    2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/JavaScriptCore/Configurations/FeatureDefines.xcconfig       2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -92,6 +92,8 @@
</span><span class="cx"> 
</span><span class="cx"> ENABLE_CSS_SELECTORS_LEVEL4 = ENABLE_CSS_SELECTORS_LEVEL4;
</span><span class="cx"> 
</span><ins>+ENABLE_CSS_TRAILING_WORD = ENABLE_CSS_TRAILING_WORD;
+
</ins><span class="cx"> ENABLE_CSS_TYPED_OM = ENABLE_CSS_TYPED_OM;
</span><span class="cx"> 
</span><span class="cx"> ENABLE_CSS_CONIC_GRADIENTS = ENABLE_CSS_CONIC_GRADIENTS;
</span><span class="lines">@@ -400,4 +402,4 @@
</span><span class="cx"> 
</span><span class="cx"> ENABLE_XSLT = ENABLE_XSLT;
</span><span class="cx"> 
</span><del>-FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCELERATED_OVERFLOW_SCROLLING) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_C_LOOP) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_DEVICE_ADAPTATION) $(ENABLE_CSS_IMAGE_ORIENTATION) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_CUSTOM_SCHEME_HANDLER) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DASHBOARD_SUPPORT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_
 FEATURES) $(ENABLE_FAST_JIT_PERMISSIONS) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FTL_JIT) $(ENABLE_FULLSCREEN_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_ICONDATABASE) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_INTL) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_JIT) $(ENABLE_KEYBOARD_CODE_ATTRIBUTE) $(ENABLE_KEYBOARD_KEY_ATTRIBUTE) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MAC_VIDEO_TOOLBOX) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATIS
 TICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_CONTENT_UTILS) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NOTIFICATIONS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_WEB_CRYPTO) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_USERSELECT_ALL) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_RTC) $(ENABLE_WEBASSEMBLY) $(ENABLE_WEBASS
 EMBLY_STREAMING_API) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBMETAL) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
</del><ins>+FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCELERATED_OVERFLOW_SCROLLING) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_C_LOOP) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_DEVICE_ADAPTATION) $(ENABLE_CSS_IMAGE_ORIENTATION) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_CUSTOM_SCHEME_HANDLER) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DASHBOARD_SUPPORT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_ENCRYPTED_ME
 DIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FAST_JIT_PERMISSIONS) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FTL_JIT) $(ENABLE_FULLSCREEN_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_ICONDATABASE) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_INTL) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_JIT) $(ENABLE_KEYBOARD_CODE_ATTRIBUTE) $(ENABLE_KEYBOARD_KEY_ATTRIBUTE) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MAC_VIDEO_TOOLBOX) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SO
 URCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_CONTENT_UTILS) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NOTIFICATIONS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_WEB_CRYPTO) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_USERSELECT_ALL) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_RTC) $(ENABLE_W
 EBASSEMBLY) $(ENABLE_WEBASSEMBLY_STREAMING_API) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBMETAL) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
</ins></span></pre></div>
<a id="branchessafari607260branchSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/WebCore/ChangeLog (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/WebCore/ChangeLog        2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/WebCore/ChangeLog   2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -1,5 +1,175 @@
</span><span class="cx"> 2019-04-24  Babak Shafiei  <bshafiei@apple.com>
</span><span class="cx"> 
</span><ins>+        Cherry-pick r244174. rdar://problem/28160396
+
+    Cherry-pick r243841. rdar://problem/49725678
+    
+        -apple-trailing-word is needed for browser detection
+        https://bugs.webkit.org/show_bug.cgi?id=196575
+    
+        Unreviewed.
+    
+        PerformanceTests:
+    
+        * MotionMark/resources/debug-runner/motionmark.css:
+        (#intro .start-benchmark p):
+    
+        Source/JavaScriptCore:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebCore:
+    
+        This is an unreviewed partial revert of r243819. Turns out there are some websites
+        which use this property to do browser detection. So, we need to continue to parse
+        the property, but we don't need the property to do anything.
+    
+        Test: fast/text/trailing-word-detection.html
+    
+        * Configurations/FeatureDefines.xcconfig:
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+        * css/CSSPrimitiveValueMappings.h:
+        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+        * css/CSSProperties.json:
+        * css/CSSValueKeywords.in:
+        * css/parser/CSSParserFastPaths.cpp:
+        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+        * rendering/style/RenderStyle.h:
+        (WebCore::RenderStyle::trailingWord const):
+        (WebCore::RenderStyle::setTrailingWord):
+        (WebCore::RenderStyle::initialTrailingWord):
+        * rendering/style/RenderStyleConstants.h:
+    
+        Source/WebCore/PAL:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebKit:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebKitLegacy/mac:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Tools:
+    
+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+    
+        LayoutTests:
+    
+        * fast/text/trailing-word-detection-expected.txt: Added.
+        * fast/text/trailing-word-detection.html: Added.
+        * platform/gtk/TestExpectations:
+        * platform/win/TestExpectations:
+    
+        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+    
+    git-svn-id: https://svn.webkit.org/repository/webkit/branches/safari-607-branch@244174 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+    2019-04-10  Alan Coon  <alancoon@apple.com>
+
+            Cherry-pick r243841. rdar://problem/49725678
+
+        -apple-trailing-word is needed for browser detection
+        https://bugs.webkit.org/show_bug.cgi?id=196575
+
+        Unreviewed.
+
+        PerformanceTests:
+
+        * MotionMark/resources/debug-runner/motionmark.css:
+        (#intro .start-benchmark p):
+
+        Source/JavaScriptCore:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebCore:
+
+        This is an unreviewed partial revert of r243819. Turns out there are some websites
+        which use this property to do browser detection. So, we need to continue to parse
+        the property, but we don't need the property to do anything.
+
+        Test: fast/text/trailing-word-detection.html
+
+        * Configurations/FeatureDefines.xcconfig:
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+        * css/CSSPrimitiveValueMappings.h:
+        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+        * css/CSSProperties.json:
+        * css/CSSValueKeywords.in:
+        * css/parser/CSSParserFastPaths.cpp:
+        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+        * rendering/style/RenderStyle.h:
+        (WebCore::RenderStyle::trailingWord const):
+        (WebCore::RenderStyle::setTrailingWord):
+        (WebCore::RenderStyle::initialTrailingWord):
+        * rendering/style/RenderStyleConstants.h:
+
+        Source/WebCore/PAL:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebKit:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebKitLegacy/mac:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Tools:
+
+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+
+        LayoutTests:
+
+        * fast/text/trailing-word-detection-expected.txt: Added.
+        * fast/text/trailing-word-detection.html: Added.
+        * platform/gtk/TestExpectations:
+        * platform/win/TestExpectations:
+
+        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+        2019-04-03  Myles C. Maxfield  <mmaxfield@apple.com>
+
+                -apple-trailing-word is needed for browser detection
+                https://bugs.webkit.org/show_bug.cgi?id=196575
+
+                Unreviewed.
+
+                This is an unreviewed partial revert of r243819. Turns out there are some websites
+                which use this property to do browser detection. So, we need to continue to parse
+                the property, but we don't need the property to do anything.
+
+                Test: fast/text/trailing-word-detection.html
+
+                * Configurations/FeatureDefines.xcconfig:
+                * css/CSSComputedStyleDeclaration.cpp:
+                (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+                * css/CSSPrimitiveValueMappings.h:
+                (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+                (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+                * css/CSSProperties.json:
+                * css/CSSValueKeywords.in:
+                * css/parser/CSSParserFastPaths.cpp:
+                (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+                (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+                * rendering/style/RenderStyle.h:
+                (WebCore::RenderStyle::trailingWord const):
+                (WebCore::RenderStyle::setTrailingWord):
+                (WebCore::RenderStyle::initialTrailingWord):
+                * rendering/style/RenderStyleConstants.h:
+
+2019-04-24  Babak Shafiei  <bshafiei@apple.com>
+
</ins><span class="cx">         Cherry-pick r244173. rdar://problem/28160396
</span><span class="cx"> 
</span><span class="cx">     Cherry-pick r243819. rdar://problem/49725678
</span></span></pre></div>
<a id="branchessafari607260branchSourceWebCoreConfigurationsFeatureDefinesxcconfig"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/WebCore/Configurations/FeatureDefines.xcconfig (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/WebCore/Configurations/FeatureDefines.xcconfig   2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/WebCore/Configurations/FeatureDefines.xcconfig      2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -92,6 +92,8 @@
</span><span class="cx"> 
</span><span class="cx"> ENABLE_CSS_SELECTORS_LEVEL4 = ENABLE_CSS_SELECTORS_LEVEL4;
</span><span class="cx"> 
</span><ins>+ENABLE_CSS_TRAILING_WORD = ENABLE_CSS_TRAILING_WORD;
+
</ins><span class="cx"> ENABLE_CSS_TYPED_OM = ENABLE_CSS_TYPED_OM;
</span><span class="cx"> 
</span><span class="cx"> ENABLE_CSS_CONIC_GRADIENTS = ENABLE_CSS_CONIC_GRADIENTS;
</span><span class="lines">@@ -400,4 +402,4 @@
</span><span class="cx"> 
</span><span class="cx"> ENABLE_XSLT = ENABLE_XSLT;
</span><span class="cx"> 
</span><del>-FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCELERATED_OVERFLOW_SCROLLING) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_C_LOOP) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_DEVICE_ADAPTATION) $(ENABLE_CSS_IMAGE_ORIENTATION) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_CUSTOM_SCHEME_HANDLER) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DASHBOARD_SUPPORT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_
 FEATURES) $(ENABLE_FAST_JIT_PERMISSIONS) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FTL_JIT) $(ENABLE_FULLSCREEN_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_ICONDATABASE) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_INTL) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_JIT) $(ENABLE_KEYBOARD_CODE_ATTRIBUTE) $(ENABLE_KEYBOARD_KEY_ATTRIBUTE) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MAC_VIDEO_TOOLBOX) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATIS
 TICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_CONTENT_UTILS) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NOTIFICATIONS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_WEB_CRYPTO) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_USERSELECT_ALL) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_RTC) $(ENABLE_WEBASSEMBLY) $(ENABLE_WEBASS
 EMBLY_STREAMING_API) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBMETAL) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
</del><ins>+FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCELERATED_OVERFLOW_SCROLLING) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_C_LOOP) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_DEVICE_ADAPTATION) $(ENABLE_CSS_IMAGE_ORIENTATION) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_CUSTOM_SCHEME_HANDLER) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DASHBOARD_SUPPORT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_ENCRYPTED_ME
 DIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FAST_JIT_PERMISSIONS) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FTL_JIT) $(ENABLE_FULLSCREEN_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_ICONDATABASE) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_INTL) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_JIT) $(ENABLE_KEYBOARD_CODE_ATTRIBUTE) $(ENABLE_KEYBOARD_KEY_ATTRIBUTE) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MAC_VIDEO_TOOLBOX) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SO
 URCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_CONTENT_UTILS) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NOTIFICATIONS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_WEB_CRYPTO) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_USERSELECT_ALL) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_RTC) $(ENABLE_W
 EBASSEMBLY) $(ENABLE_WEBASSEMBLY_STREAMING_API) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBMETAL) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
</ins></span></pre></div>
<a id="branchessafari607260branchSourceWebCorePALChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/WebCore/PAL/ChangeLog (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/WebCore/PAL/ChangeLog    2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/WebCore/PAL/ChangeLog       2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -1,5 +1,154 @@
</span><span class="cx"> 2019-04-24  Babak Shafiei  <bshafiei@apple.com>
</span><span class="cx"> 
</span><ins>+        Cherry-pick r244174. rdar://problem/28160396
+
+    Cherry-pick r243841. rdar://problem/49725678
+    
+        -apple-trailing-word is needed for browser detection
+        https://bugs.webkit.org/show_bug.cgi?id=196575
+    
+        Unreviewed.
+    
+        PerformanceTests:
+    
+        * MotionMark/resources/debug-runner/motionmark.css:
+        (#intro .start-benchmark p):
+    
+        Source/JavaScriptCore:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebCore:
+    
+        This is an unreviewed partial revert of r243819. Turns out there are some websites
+        which use this property to do browser detection. So, we need to continue to parse
+        the property, but we don't need the property to do anything.
+    
+        Test: fast/text/trailing-word-detection.html
+    
+        * Configurations/FeatureDefines.xcconfig:
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+        * css/CSSPrimitiveValueMappings.h:
+        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+        * css/CSSProperties.json:
+        * css/CSSValueKeywords.in:
+        * css/parser/CSSParserFastPaths.cpp:
+        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+        * rendering/style/RenderStyle.h:
+        (WebCore::RenderStyle::trailingWord const):
+        (WebCore::RenderStyle::setTrailingWord):
+        (WebCore::RenderStyle::initialTrailingWord):
+        * rendering/style/RenderStyleConstants.h:
+    
+        Source/WebCore/PAL:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebKit:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebKitLegacy/mac:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Tools:
+    
+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+    
+        LayoutTests:
+    
+        * fast/text/trailing-word-detection-expected.txt: Added.
+        * fast/text/trailing-word-detection.html: Added.
+        * platform/gtk/TestExpectations:
+        * platform/win/TestExpectations:
+    
+        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+    
+    git-svn-id: https://svn.webkit.org/repository/webkit/branches/safari-607-branch@244174 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+    2019-04-10  Alan Coon  <alancoon@apple.com>
+
+            Cherry-pick r243841. rdar://problem/49725678
+
+        -apple-trailing-word is needed for browser detection
+        https://bugs.webkit.org/show_bug.cgi?id=196575
+
+        Unreviewed.
+
+        PerformanceTests:
+
+        * MotionMark/resources/debug-runner/motionmark.css:
+        (#intro .start-benchmark p):
+
+        Source/JavaScriptCore:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebCore:
+
+        This is an unreviewed partial revert of r243819. Turns out there are some websites
+        which use this property to do browser detection. So, we need to continue to parse
+        the property, but we don't need the property to do anything.
+
+        Test: fast/text/trailing-word-detection.html
+
+        * Configurations/FeatureDefines.xcconfig:
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+        * css/CSSPrimitiveValueMappings.h:
+        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+        * css/CSSProperties.json:
+        * css/CSSValueKeywords.in:
+        * css/parser/CSSParserFastPaths.cpp:
+        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+        * rendering/style/RenderStyle.h:
+        (WebCore::RenderStyle::trailingWord const):
+        (WebCore::RenderStyle::setTrailingWord):
+        (WebCore::RenderStyle::initialTrailingWord):
+        * rendering/style/RenderStyleConstants.h:
+
+        Source/WebCore/PAL:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebKit:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebKitLegacy/mac:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Tools:
+
+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+
+        LayoutTests:
+
+        * fast/text/trailing-word-detection-expected.txt: Added.
+        * fast/text/trailing-word-detection.html: Added.
+        * platform/gtk/TestExpectations:
+        * platform/win/TestExpectations:
+
+        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+        2019-04-03  Myles C. Maxfield  <mmaxfield@apple.com>
+
+                -apple-trailing-word is needed for browser detection
+                https://bugs.webkit.org/show_bug.cgi?id=196575
+
+                Unreviewed.
+
+                * Configurations/FeatureDefines.xcconfig:
+
+2019-04-24  Babak Shafiei  <bshafiei@apple.com>
+
</ins><span class="cx">         Cherry-pick r244173. rdar://problem/28160396
</span><span class="cx"> 
</span><span class="cx">     Cherry-pick r243819. rdar://problem/49725678
</span></span></pre></div>
<a id="branchessafari607260branchSourceWebCorePALConfigurationsFeatureDefinesxcconfig"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/WebCore/PAL/Configurations/FeatureDefines.xcconfig (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/WebCore/PAL/Configurations/FeatureDefines.xcconfig       2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/WebCore/PAL/Configurations/FeatureDefines.xcconfig  2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -92,6 +92,8 @@
</span><span class="cx"> 
</span><span class="cx"> ENABLE_CSS_SELECTORS_LEVEL4 = ENABLE_CSS_SELECTORS_LEVEL4;
</span><span class="cx"> 
</span><ins>+ENABLE_CSS_TRAILING_WORD = ENABLE_CSS_TRAILING_WORD;
+
</ins><span class="cx"> ENABLE_CSS_TYPED_OM = ENABLE_CSS_TYPED_OM;
</span><span class="cx"> 
</span><span class="cx"> ENABLE_CSS_CONIC_GRADIENTS = ENABLE_CSS_CONIC_GRADIENTS;
</span><span class="lines">@@ -400,4 +402,4 @@
</span><span class="cx"> 
</span><span class="cx"> ENABLE_XSLT = ENABLE_XSLT;
</span><span class="cx"> 
</span><del>-FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCELERATED_OVERFLOW_SCROLLING) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_C_LOOP) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_DEVICE_ADAPTATION) $(ENABLE_CSS_IMAGE_ORIENTATION) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_CUSTOM_SCHEME_HANDLER) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DASHBOARD_SUPPORT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_
 FEATURES) $(ENABLE_FAST_JIT_PERMISSIONS) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FTL_JIT) $(ENABLE_FULLSCREEN_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_ICONDATABASE) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_INTL) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_JIT) $(ENABLE_KEYBOARD_CODE_ATTRIBUTE) $(ENABLE_KEYBOARD_KEY_ATTRIBUTE) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MAC_VIDEO_TOOLBOX) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATIS
 TICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_CONTENT_UTILS) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NOTIFICATIONS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_WEB_CRYPTO) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_USERSELECT_ALL) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_RTC) $(ENABLE_WEBASSEMBLY) $(ENABLE_WEBASS
 EMBLY_STREAMING_API) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBMETAL) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
</del><ins>+FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCELERATED_OVERFLOW_SCROLLING) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_C_LOOP) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_DEVICE_ADAPTATION) $(ENABLE_CSS_IMAGE_ORIENTATION) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_CUSTOM_SCHEME_HANDLER) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DASHBOARD_SUPPORT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_ENCRYPTED_ME
 DIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FAST_JIT_PERMISSIONS) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FTL_JIT) $(ENABLE_FULLSCREEN_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_ICONDATABASE) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_INTL) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_JIT) $(ENABLE_KEYBOARD_CODE_ATTRIBUTE) $(ENABLE_KEYBOARD_KEY_ATTRIBUTE) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MAC_VIDEO_TOOLBOX) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SO
 URCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_CONTENT_UTILS) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NOTIFICATIONS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_WEB_CRYPTO) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_USERSELECT_ALL) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_RTC) $(ENABLE_W
 EBASSEMBLY) $(ENABLE_WEBASSEMBLY_STREAMING_API) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBMETAL) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
</ins></span></pre></div>
<a id="branchessafari607260branchSourceWebCorecssCSSComputedStyleDeclarationcpp"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/WebCore/css/CSSComputedStyleDeclaration.cpp (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/WebCore/css/CSSComputedStyleDeclaration.cpp      2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/WebCore/css/CSSComputedStyleDeclaration.cpp 2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -3959,6 +3959,11 @@
</span><span class="cx">             return valueForScrollSnapAlignment(style.scrollSnapAlign());
</span><span class="cx"> #endif
</span><span class="cx"> 
</span><ins>+#if ENABLE(CSS_TRAILING_WORD)
+        case CSSPropertyAppleTrailingWord:
+            return cssValuePool.createValue(style.trailingWord());
+#endif
+
</ins><span class="cx"> #if ENABLE(APPLE_PAY)
</span><span class="cx">         case CSSPropertyApplePayButtonStyle:
</span><span class="cx">             return cssValuePool.createValue(style.applePayButtonStyle());
</span></span></pre></div>
<a id="branchessafari607260branchSourceWebCorecssCSSPrimitiveValueMappingsh"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/WebCore/css/CSSPrimitiveValueMappings.h (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/WebCore/css/CSSPrimitiveValueMappings.h  2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/WebCore/css/CSSPrimitiveValueMappings.h     2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -5384,6 +5384,40 @@
</span><span class="cx"> 
</span><span class="cx"> #endif
</span><span class="cx"> 
</span><ins>+#if ENABLE(CSS_TRAILING_WORD)
+template<> inline CSSPrimitiveValue::CSSPrimitiveValue(TrailingWord e)
+    : CSSValue(PrimitiveClass)
+{
+    m_primitiveUnitType = CSS_VALUE_ID;
+    switch (e) {
+    case TrailingWord::Auto:
+        m_value.valueID = CSSValueAuto;
+        break;
+    case TrailingWord::PartiallyBalanced:
+        m_value.valueID = CSSValueWebkitPartiallyBalanced;
+        break;
+    default:
+        ASSERT_NOT_REACHED();
+        break;
+    }
+}
+
+template<> inline CSSPrimitiveValue::operator TrailingWord() const
+{
+    ASSERT(isValueID());
+    switch (m_value.valueID) {
+    case CSSValueAuto:
+        return TrailingWord::Auto;
+    case CSSValueWebkitPartiallyBalanced:
+        return TrailingWord::PartiallyBalanced;
+    default:
+        break;
+    }
+    ASSERT_NOT_REACHED();
+    return TrailingWord::Auto;
+}
+#endif
+
</ins><span class="cx"> #if ENABLE(APPLE_PAY)
</span><span class="cx"> template<> inline CSSPrimitiveValue::CSSPrimitiveValue(ApplePayButtonStyle e)
</span><span class="cx">     : CSSValue(PrimitiveClass)
</span></span></pre></div>
<a id="branchessafari607260branchSourceWebCorecssCSSPropertiesjson"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/WebCore/css/CSSProperties.json (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/WebCore/css/CSSProperties.json   2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/WebCore/css/CSSProperties.json      2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -6699,6 +6699,21 @@
</span><span class="cx">             },
</span><span class="cx">             "status": "non-standard"
</span><span class="cx">         },
</span><ins>+        "-apple-trailing-word": {
+            "inherited": true,
+            "values": [
+                "auto",
+                "-webkit-partially-balanced"
+            ],
+            "codegen-properties": {
+                "name-for-methods": "TrailingWord",
+                "enable-if": "ENABLE_CSS_TRAILING_WORD"
+            },
+            "status": {
+                "status": "non-standard",
+                "comment": "Needed for feature-detecting the Safari browser. Implementation has no effect."
+            }
+        },
</ins><span class="cx">         "-apple-pay-button-style": {
</span><span class="cx">             "codegen-properties": {
</span><span class="cx">                 "enable-if": "ENABLE_APPLE_PAY"
</span></span></pre></div>
<a id="branchessafari607260branchSourceWebCorecssCSSValueKeywordsin"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/WebCore/css/CSSValueKeywords.in (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/WebCore/css/CSSValueKeywords.in  2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/WebCore/css/CSSValueKeywords.in     2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -1323,6 +1323,11 @@
</span><span class="cx"> from-dimensions
</span><span class="cx"> from-intrinsic
</span><span class="cx"> 
</span><ins>+#if defined(ENABLE_CSS_TRAILING_WORD) && ENABLE_CSS_TRAILING_WORD
+// -apple-trailing-word
+-webkit-partially-balanced
+#endif
+
</ins><span class="cx"> #if defined(ENABLE_APPLE_PAY) && ENABLE_APPLE_PAY
</span><span class="cx"> // -apple-pay-button-style
</span><span class="cx"> white-outline
</span></span></pre></div>
<a id="branchessafari607260branchSourceWebCorecssparserCSSParserFastPathscpp"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/WebCore/css/parser/CSSParserFastPaths.cpp (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/WebCore/css/parser/CSSParserFastPaths.cpp        2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/WebCore/css/parser/CSSParserFastPaths.cpp   2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -762,6 +762,10 @@
</span><span class="cx">     case CSSPropertyTouchAction: // auto | manipulation
</span><span class="cx">         return valueID == CSSValueAuto || valueID == CSSValueManipulation;
</span><span class="cx"> #endif
</span><ins>+#if ENABLE(CSS_TRAILING_WORD)
+    case CSSPropertyAppleTrailingWord: // auto | -apple-partially-balanced
+        return valueID == CSSValueAuto || valueID == CSSValueWebkitPartiallyBalanced;
+#endif
</ins><span class="cx"> #if ENABLE(APPLE_PAY)
</span><span class="cx">     case CSSPropertyApplePayButtonStyle: // white | white-outline | black
</span><span class="cx">         return valueID == CSSValueWhite || valueID == CSSValueWhiteOutline || valueID == CSSValueBlack;
</span><span class="lines">@@ -930,6 +934,9 @@
</span><span class="cx">     // case CSSPropertyTextJustify:
</span><span class="cx">     // case CSSPropertyTextOrientation:
</span><span class="cx">     // case CSSPropertyUserSelect:
</span><ins>+#if ENABLE(CSS_TRAILING_WORD)
+    case CSSPropertyAppleTrailingWord:
+#endif
</ins><span class="cx"> #if ENABLE(CSS_COMPOSITING)
</span><span class="cx">     case CSSPropertyIsolation:
</span><span class="cx">     case CSSPropertyMixBlendMode:
</span></span></pre></div>
<a id="branchessafari607260branchSourceWebCorerenderingstyleRenderStyleh"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/WebCore/rendering/style/RenderStyle.h (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/WebCore/rendering/style/RenderStyle.h    2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/WebCore/rendering/style/RenderStyle.h       2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -798,6 +798,10 @@
</span><span class="cx"> 
</span><span class="cx">     bool shouldPlaceBlockDirectionScrollbarOnLeft() const;
</span><span class="cx"> 
</span><ins>+#if ENABLE(CSS_TRAILING_WORD)
+    TrailingWord trailingWord() const { return TrailingWord::Auto; }
+#endif
+
</ins><span class="cx"> #if ENABLE(APPLE_PAY)
</span><span class="cx">     ApplePayButtonStyle applePayButtonStyle() const { return static_cast<ApplePayButtonStyle>(m_rareNonInheritedData->applePayButtonStyle); }
</span><span class="cx">     ApplePayButtonType applePayButtonType() const { return static_cast<ApplePayButtonType>(m_rareNonInheritedData->applePayButtonType); }
</span><span class="lines">@@ -1254,6 +1258,10 @@
</span><span class="cx"> 
</span><span class="cx">     void setTextSecurity(TextSecurity security) { SET_VAR(m_rareInheritedData, textSecurity, static_cast<unsigned>(security)); }
</span><span class="cx"> 
</span><ins>+#if ENABLE(CSS_TRAILING_WORD)
+    void setTrailingWord(TrailingWord) { }
+#endif
+
</ins><span class="cx"> #if ENABLE(APPLE_PAY)
</span><span class="cx">     void setApplePayButtonStyle(ApplePayButtonStyle style) { SET_VAR(m_rareNonInheritedData, applePayButtonStyle, static_cast<unsigned>(style)); }
</span><span class="cx">     void setApplePayButtonType(ApplePayButtonType type) { SET_VAR(m_rareNonInheritedData, applePayButtonType, static_cast<unsigned>(type)); }
</span><span class="lines">@@ -1621,6 +1629,10 @@
</span><span class="cx">     static Length initialScrollPadding() { return Length(Fixed); }
</span><span class="cx"> #endif
</span><span class="cx"> 
</span><ins>+#if ENABLE(CSS_TRAILING_WORD)
+    static TrailingWord initialTrailingWord() { return TrailingWord::Auto; }
+#endif
+
</ins><span class="cx"> #if ENABLE(APPLE_PAY)
</span><span class="cx">     static ApplePayButtonStyle initialApplePayButtonStyle() { return ApplePayButtonStyle::Black; }
</span><span class="cx">     static ApplePayButtonType initialApplePayButtonType() { return ApplePayButtonType::Plain; }
</span></span></pre></div>
<a id="branchessafari607260branchSourceWebCorerenderingstyleRenderStyleConstantsh"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/WebCore/rendering/style/RenderStyleConstants.h (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/WebCore/rendering/style/RenderStyleConstants.h   2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/WebCore/rendering/style/RenderStyleConstants.h      2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -1115,6 +1115,13 @@
</span><span class="cx"> };
</span><span class="cx"> #endif
</span><span class="cx"> 
</span><ins>+#if ENABLE(CSS_TRAILING_WORD)
+enum class TrailingWord : uint8_t {
+    Auto,
+    PartiallyBalanced
+};
+#endif
+
</ins><span class="cx"> #if ENABLE(APPLE_PAY)
</span><span class="cx"> enum class ApplePayButtonStyle : uint8_t {
</span><span class="cx">     White,
</span></span></pre></div>
<a id="branchessafari607260branchSourceWebKitChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/WebKit/ChangeLog (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/WebKit/ChangeLog 2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/WebKit/ChangeLog    2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -1,5 +1,154 @@
</span><span class="cx"> 2019-04-24  Babak Shafiei  <bshafiei@apple.com>
</span><span class="cx"> 
</span><ins>+        Cherry-pick r244174. rdar://problem/28160396
+
+    Cherry-pick r243841. rdar://problem/49725678
+    
+        -apple-trailing-word is needed for browser detection
+        https://bugs.webkit.org/show_bug.cgi?id=196575
+    
+        Unreviewed.
+    
+        PerformanceTests:
+    
+        * MotionMark/resources/debug-runner/motionmark.css:
+        (#intro .start-benchmark p):
+    
+        Source/JavaScriptCore:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebCore:
+    
+        This is an unreviewed partial revert of r243819. Turns out there are some websites
+        which use this property to do browser detection. So, we need to continue to parse
+        the property, but we don't need the property to do anything.
+    
+        Test: fast/text/trailing-word-detection.html
+    
+        * Configurations/FeatureDefines.xcconfig:
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+        * css/CSSPrimitiveValueMappings.h:
+        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+        * css/CSSProperties.json:
+        * css/CSSValueKeywords.in:
+        * css/parser/CSSParserFastPaths.cpp:
+        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+        * rendering/style/RenderStyle.h:
+        (WebCore::RenderStyle::trailingWord const):
+        (WebCore::RenderStyle::setTrailingWord):
+        (WebCore::RenderStyle::initialTrailingWord):
+        * rendering/style/RenderStyleConstants.h:
+    
+        Source/WebCore/PAL:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebKit:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebKitLegacy/mac:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Tools:
+    
+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+    
+        LayoutTests:
+    
+        * fast/text/trailing-word-detection-expected.txt: Added.
+        * fast/text/trailing-word-detection.html: Added.
+        * platform/gtk/TestExpectations:
+        * platform/win/TestExpectations:
+    
+        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+    
+    git-svn-id: https://svn.webkit.org/repository/webkit/branches/safari-607-branch@244174 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+    2019-04-10  Alan Coon  <alancoon@apple.com>
+
+            Cherry-pick r243841. rdar://problem/49725678
+
+        -apple-trailing-word is needed for browser detection
+        https://bugs.webkit.org/show_bug.cgi?id=196575
+
+        Unreviewed.
+
+        PerformanceTests:
+
+        * MotionMark/resources/debug-runner/motionmark.css:
+        (#intro .start-benchmark p):
+
+        Source/JavaScriptCore:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebCore:
+
+        This is an unreviewed partial revert of r243819. Turns out there are some websites
+        which use this property to do browser detection. So, we need to continue to parse
+        the property, but we don't need the property to do anything.
+
+        Test: fast/text/trailing-word-detection.html
+
+        * Configurations/FeatureDefines.xcconfig:
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+        * css/CSSPrimitiveValueMappings.h:
+        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+        * css/CSSProperties.json:
+        * css/CSSValueKeywords.in:
+        * css/parser/CSSParserFastPaths.cpp:
+        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+        * rendering/style/RenderStyle.h:
+        (WebCore::RenderStyle::trailingWord const):
+        (WebCore::RenderStyle::setTrailingWord):
+        (WebCore::RenderStyle::initialTrailingWord):
+        * rendering/style/RenderStyleConstants.h:
+
+        Source/WebCore/PAL:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebKit:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebKitLegacy/mac:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Tools:
+
+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+
+        LayoutTests:
+
+        * fast/text/trailing-word-detection-expected.txt: Added.
+        * fast/text/trailing-word-detection.html: Added.
+        * platform/gtk/TestExpectations:
+        * platform/win/TestExpectations:
+
+        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+        2019-04-03  Myles C. Maxfield  <mmaxfield@apple.com>
+
+                -apple-trailing-word is needed for browser detection
+                https://bugs.webkit.org/show_bug.cgi?id=196575
+
+                Unreviewed.
+
+                * Configurations/FeatureDefines.xcconfig:
+
+2019-04-24  Babak Shafiei  <bshafiei@apple.com>
+
</ins><span class="cx">         Cherry-pick r244173. rdar://problem/28160396
</span><span class="cx"> 
</span><span class="cx">     Cherry-pick r243819. rdar://problem/49725678
</span></span></pre></div>
<a id="branchessafari607260branchSourceWebKitConfigurationsFeatureDefinesxcconfig"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/WebKit/Configurations/FeatureDefines.xcconfig (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/WebKit/Configurations/FeatureDefines.xcconfig    2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/WebKit/Configurations/FeatureDefines.xcconfig       2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -92,6 +92,8 @@
</span><span class="cx"> 
</span><span class="cx"> ENABLE_CSS_SELECTORS_LEVEL4 = ENABLE_CSS_SELECTORS_LEVEL4;
</span><span class="cx"> 
</span><ins>+ENABLE_CSS_TRAILING_WORD = ENABLE_CSS_TRAILING_WORD;
+
</ins><span class="cx"> ENABLE_CSS_TYPED_OM = ENABLE_CSS_TYPED_OM;
</span><span class="cx"> 
</span><span class="cx"> ENABLE_CSS_CONIC_GRADIENTS = ENABLE_CSS_CONIC_GRADIENTS;
</span><span class="lines">@@ -400,4 +402,4 @@
</span><span class="cx"> 
</span><span class="cx"> ENABLE_XSLT = ENABLE_XSLT;
</span><span class="cx"> 
</span><del>-FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCELERATED_OVERFLOW_SCROLLING) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_C_LOOP) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_DEVICE_ADAPTATION) $(ENABLE_CSS_IMAGE_ORIENTATION) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_CUSTOM_SCHEME_HANDLER) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DASHBOARD_SUPPORT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_
 FEATURES) $(ENABLE_FAST_JIT_PERMISSIONS) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FTL_JIT) $(ENABLE_FULLSCREEN_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_ICONDATABASE) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_INTL) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_JIT) $(ENABLE_KEYBOARD_CODE_ATTRIBUTE) $(ENABLE_KEYBOARD_KEY_ATTRIBUTE) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MAC_VIDEO_TOOLBOX) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATIS
 TICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_CONTENT_UTILS) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NOTIFICATIONS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_WEB_CRYPTO) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_USERSELECT_ALL) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_RTC) $(ENABLE_WEBASSEMBLY) $(ENABLE_WEBASS
 EMBLY_STREAMING_API) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBMETAL) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
</del><ins>+FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCELERATED_OVERFLOW_SCROLLING) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_C_LOOP) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_DEVICE_ADAPTATION) $(ENABLE_CSS_IMAGE_ORIENTATION) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_CUSTOM_SCHEME_HANDLER) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DASHBOARD_SUPPORT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_ENCRYPTED_ME
 DIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FAST_JIT_PERMISSIONS) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FTL_JIT) $(ENABLE_FULLSCREEN_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_ICONDATABASE) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_INTL) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_JIT) $(ENABLE_KEYBOARD_CODE_ATTRIBUTE) $(ENABLE_KEYBOARD_KEY_ATTRIBUTE) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MAC_VIDEO_TOOLBOX) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SO
 URCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_CONTENT_UTILS) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NOTIFICATIONS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_WEB_CRYPTO) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_USERSELECT_ALL) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_RTC) $(ENABLE_W
 EBASSEMBLY) $(ENABLE_WEBASSEMBLY_STREAMING_API) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBMETAL) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
</ins></span></pre></div>
<a id="branchessafari607260branchSourceWebKitLegacymacChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/WebKitLegacy/mac/ChangeLog (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/WebKitLegacy/mac/ChangeLog       2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/WebKitLegacy/mac/ChangeLog  2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -1,5 +1,154 @@
</span><span class="cx"> 2019-04-24  Babak Shafiei  <bshafiei@apple.com>
</span><span class="cx"> 
</span><ins>+        Cherry-pick r244174. rdar://problem/28160396
+
+    Cherry-pick r243841. rdar://problem/49725678
+    
+        -apple-trailing-word is needed for browser detection
+        https://bugs.webkit.org/show_bug.cgi?id=196575
+    
+        Unreviewed.
+    
+        PerformanceTests:
+    
+        * MotionMark/resources/debug-runner/motionmark.css:
+        (#intro .start-benchmark p):
+    
+        Source/JavaScriptCore:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebCore:
+    
+        This is an unreviewed partial revert of r243819. Turns out there are some websites
+        which use this property to do browser detection. So, we need to continue to parse
+        the property, but we don't need the property to do anything.
+    
+        Test: fast/text/trailing-word-detection.html
+    
+        * Configurations/FeatureDefines.xcconfig:
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+        * css/CSSPrimitiveValueMappings.h:
+        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+        * css/CSSProperties.json:
+        * css/CSSValueKeywords.in:
+        * css/parser/CSSParserFastPaths.cpp:
+        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+        * rendering/style/RenderStyle.h:
+        (WebCore::RenderStyle::trailingWord const):
+        (WebCore::RenderStyle::setTrailingWord):
+        (WebCore::RenderStyle::initialTrailingWord):
+        * rendering/style/RenderStyleConstants.h:
+    
+        Source/WebCore/PAL:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebKit:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebKitLegacy/mac:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Tools:
+    
+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+    
+        LayoutTests:
+    
+        * fast/text/trailing-word-detection-expected.txt: Added.
+        * fast/text/trailing-word-detection.html: Added.
+        * platform/gtk/TestExpectations:
+        * platform/win/TestExpectations:
+    
+        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+    
+    git-svn-id: https://svn.webkit.org/repository/webkit/branches/safari-607-branch@244174 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+    2019-04-10  Alan Coon  <alancoon@apple.com>
+
+            Cherry-pick r243841. rdar://problem/49725678
+
+        -apple-trailing-word is needed for browser detection
+        https://bugs.webkit.org/show_bug.cgi?id=196575
+
+        Unreviewed.
+
+        PerformanceTests:
+
+        * MotionMark/resources/debug-runner/motionmark.css:
+        (#intro .start-benchmark p):
+
+        Source/JavaScriptCore:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebCore:
+
+        This is an unreviewed partial revert of r243819. Turns out there are some websites
+        which use this property to do browser detection. So, we need to continue to parse
+        the property, but we don't need the property to do anything.
+
+        Test: fast/text/trailing-word-detection.html
+
+        * Configurations/FeatureDefines.xcconfig:
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+        * css/CSSPrimitiveValueMappings.h:
+        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+        * css/CSSProperties.json:
+        * css/CSSValueKeywords.in:
+        * css/parser/CSSParserFastPaths.cpp:
+        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+        * rendering/style/RenderStyle.h:
+        (WebCore::RenderStyle::trailingWord const):
+        (WebCore::RenderStyle::setTrailingWord):
+        (WebCore::RenderStyle::initialTrailingWord):
+        * rendering/style/RenderStyleConstants.h:
+
+        Source/WebCore/PAL:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebKit:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebKitLegacy/mac:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Tools:
+
+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+
+        LayoutTests:
+
+        * fast/text/trailing-word-detection-expected.txt: Added.
+        * fast/text/trailing-word-detection.html: Added.
+        * platform/gtk/TestExpectations:
+        * platform/win/TestExpectations:
+
+        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+        2019-04-03  Myles C. Maxfield  <mmaxfield@apple.com>
+
+                -apple-trailing-word is needed for browser detection
+                https://bugs.webkit.org/show_bug.cgi?id=196575
+
+                Unreviewed.
+
+                * Configurations/FeatureDefines.xcconfig:
+
+2019-04-24  Babak Shafiei  <bshafiei@apple.com>
+
</ins><span class="cx">         Cherry-pick r244173. rdar://problem/28160396
</span><span class="cx"> 
</span><span class="cx">     Cherry-pick r243819. rdar://problem/49725678
</span></span></pre></div>
<a id="branchessafari607260branchSourceWebKitLegacymacConfigurationsFeatureDefinesxcconfig"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Source/WebKitLegacy/mac/Configurations/FeatureDefines.xcconfig (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Source/WebKitLegacy/mac/Configurations/FeatureDefines.xcconfig  2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Source/WebKitLegacy/mac/Configurations/FeatureDefines.xcconfig     2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -92,6 +92,8 @@
</span><span class="cx"> 
</span><span class="cx"> ENABLE_CSS_SELECTORS_LEVEL4 = ENABLE_CSS_SELECTORS_LEVEL4;
</span><span class="cx"> 
</span><ins>+ENABLE_CSS_TRAILING_WORD = ENABLE_CSS_TRAILING_WORD;
+
</ins><span class="cx"> ENABLE_CSS_TYPED_OM = ENABLE_CSS_TYPED_OM;
</span><span class="cx"> 
</span><span class="cx"> ENABLE_CSS_CONIC_GRADIENTS = ENABLE_CSS_CONIC_GRADIENTS;
</span><span class="lines">@@ -400,4 +402,4 @@
</span><span class="cx"> 
</span><span class="cx"> ENABLE_XSLT = ENABLE_XSLT;
</span><span class="cx"> 
</span><del>-FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCELERATED_OVERFLOW_SCROLLING) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_C_LOOP) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_DEVICE_ADAPTATION) $(ENABLE_CSS_IMAGE_ORIENTATION) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_CUSTOM_SCHEME_HANDLER) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DASHBOARD_SUPPORT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_
 FEATURES) $(ENABLE_FAST_JIT_PERMISSIONS) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FTL_JIT) $(ENABLE_FULLSCREEN_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_ICONDATABASE) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_INTL) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_JIT) $(ENABLE_KEYBOARD_CODE_ATTRIBUTE) $(ENABLE_KEYBOARD_KEY_ATTRIBUTE) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MAC_VIDEO_TOOLBOX) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATIS
 TICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_CONTENT_UTILS) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NOTIFICATIONS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_WEB_CRYPTO) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_USERSELECT_ALL) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_RTC) $(ENABLE_WEBASSEMBLY) $(ENABLE_WEBASS
 EMBLY_STREAMING_API) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBMETAL) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
</del><ins>+FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCELERATED_OVERFLOW_SCROLLING) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_C_LOOP) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_DEVICE_ADAPTATION) $(ENABLE_CSS_IMAGE_ORIENTATION) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_CUSTOM_SCHEME_HANDLER) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DASHBOARD_SUPPORT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_ENCRYPTED_ME
 DIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FAST_JIT_PERMISSIONS) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FTL_JIT) $(ENABLE_FULLSCREEN_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_ICONDATABASE) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_INTL) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_JIT) $(ENABLE_KEYBOARD_CODE_ATTRIBUTE) $(ENABLE_KEYBOARD_KEY_ATTRIBUTE) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MAC_VIDEO_TOOLBOX) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SO
 URCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_CONTENT_UTILS) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NOTIFICATIONS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_WEB_CRYPTO) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_USERSELECT_ALL) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_RTC) $(ENABLE_W
 EBASSEMBLY) $(ENABLE_WEBASSEMBLY_STREAMING_API) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBMETAL) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
</ins></span></pre></div>
<a id="branchessafari607260branchToolsChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Tools/ChangeLog (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Tools/ChangeLog 2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Tools/ChangeLog    2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -1,5 +1,154 @@
</span><span class="cx"> 2019-04-24  Babak Shafiei  <bshafiei@apple.com>
</span><span class="cx"> 
</span><ins>+        Cherry-pick r244174. rdar://problem/28160396
+
+    Cherry-pick r243841. rdar://problem/49725678
+    
+        -apple-trailing-word is needed for browser detection
+        https://bugs.webkit.org/show_bug.cgi?id=196575
+    
+        Unreviewed.
+    
+        PerformanceTests:
+    
+        * MotionMark/resources/debug-runner/motionmark.css:
+        (#intro .start-benchmark p):
+    
+        Source/JavaScriptCore:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebCore:
+    
+        This is an unreviewed partial revert of r243819. Turns out there are some websites
+        which use this property to do browser detection. So, we need to continue to parse
+        the property, but we don't need the property to do anything.
+    
+        Test: fast/text/trailing-word-detection.html
+    
+        * Configurations/FeatureDefines.xcconfig:
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+        * css/CSSPrimitiveValueMappings.h:
+        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+        * css/CSSProperties.json:
+        * css/CSSValueKeywords.in:
+        * css/parser/CSSParserFastPaths.cpp:
+        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+        * rendering/style/RenderStyle.h:
+        (WebCore::RenderStyle::trailingWord const):
+        (WebCore::RenderStyle::setTrailingWord):
+        (WebCore::RenderStyle::initialTrailingWord):
+        * rendering/style/RenderStyleConstants.h:
+    
+        Source/WebCore/PAL:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebKit:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Source/WebKitLegacy/mac:
+    
+        * Configurations/FeatureDefines.xcconfig:
+    
+        Tools:
+    
+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+    
+        LayoutTests:
+    
+        * fast/text/trailing-word-detection-expected.txt: Added.
+        * fast/text/trailing-word-detection.html: Added.
+        * platform/gtk/TestExpectations:
+        * platform/win/TestExpectations:
+    
+        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+    
+    git-svn-id: https://svn.webkit.org/repository/webkit/branches/safari-607-branch@244174 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+    2019-04-10  Alan Coon  <alancoon@apple.com>
+
+            Cherry-pick r243841. rdar://problem/49725678
+
+        -apple-trailing-word is needed for browser detection
+        https://bugs.webkit.org/show_bug.cgi?id=196575
+
+        Unreviewed.
+
+        PerformanceTests:
+
+        * MotionMark/resources/debug-runner/motionmark.css:
+        (#intro .start-benchmark p):
+
+        Source/JavaScriptCore:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebCore:
+
+        This is an unreviewed partial revert of r243819. Turns out there are some websites
+        which use this property to do browser detection. So, we need to continue to parse
+        the property, but we don't need the property to do anything.
+
+        Test: fast/text/trailing-word-detection.html
+
+        * Configurations/FeatureDefines.xcconfig:
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::ComputedStyleExtractor::valueForPropertyinStyle):
+        * css/CSSPrimitiveValueMappings.h:
+        (WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
+        (WebCore::CSSPrimitiveValue::operator TrailingWord const):
+        * css/CSSProperties.json:
+        * css/CSSValueKeywords.in:
+        * css/parser/CSSParserFastPaths.cpp:
+        (WebCore::CSSParserFastPaths::isValidKeywordPropertyAndValue):
+        (WebCore::CSSParserFastPaths::isKeywordPropertyID):
+        * rendering/style/RenderStyle.h:
+        (WebCore::RenderStyle::trailingWord const):
+        (WebCore::RenderStyle::setTrailingWord):
+        (WebCore::RenderStyle::initialTrailingWord):
+        * rendering/style/RenderStyleConstants.h:
+
+        Source/WebCore/PAL:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebKit:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Source/WebKitLegacy/mac:
+
+        * Configurations/FeatureDefines.xcconfig:
+
+        Tools:
+
+        * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+
+        LayoutTests:
+
+        * fast/text/trailing-word-detection-expected.txt: Added.
+        * fast/text/trailing-word-detection.html: Added.
+        * platform/gtk/TestExpectations:
+        * platform/win/TestExpectations:
+
+        git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243841 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+        2019-04-03  Myles C. Maxfield  <mmaxfield@apple.com>
+
+                -apple-trailing-word is needed for browser detection
+                https://bugs.webkit.org/show_bug.cgi?id=196575
+
+                Unreviewed.
+
+                * TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
+
+2019-04-24  Babak Shafiei  <bshafiei@apple.com>
+
</ins><span class="cx">         Cherry-pick r244173. rdar://problem/28160396
</span><span class="cx"> 
</span><span class="cx">     Cherry-pick r243819. rdar://problem/49725678
</span></span></pre></div>
<a id="branchessafari607260branchToolsTestWebKitAPIConfigurationsFeatureDefinesxcconfig"></a>
<div class="modfile"><h4>Modified: branches/safari-607.2.6.0-branch/Tools/TestWebKitAPI/Configurations/FeatureDefines.xcconfig (244636 => 244637)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607.2.6.0-branch/Tools/TestWebKitAPI/Configurations/FeatureDefines.xcconfig      2019-04-25 06:42:23 UTC (rev 244636)
+++ branches/safari-607.2.6.0-branch/Tools/TestWebKitAPI/Configurations/FeatureDefines.xcconfig 2019-04-25 06:42:33 UTC (rev 244637)
</span><span class="lines">@@ -92,6 +92,8 @@
</span><span class="cx"> 
</span><span class="cx"> ENABLE_CSS_SELECTORS_LEVEL4 = ENABLE_CSS_SELECTORS_LEVEL4;
</span><span class="cx"> 
</span><ins>+ENABLE_CSS_TRAILING_WORD = ENABLE_CSS_TRAILING_WORD;
+
</ins><span class="cx"> ENABLE_CSS_TYPED_OM = ENABLE_CSS_TYPED_OM;
</span><span class="cx"> 
</span><span class="cx"> ENABLE_CSS_CONIC_GRADIENTS = ENABLE_CSS_CONIC_GRADIENTS;
</span><span class="lines">@@ -400,4 +402,4 @@
</span><span class="cx"> 
</span><span class="cx"> ENABLE_XSLT = ENABLE_XSLT;
</span><span class="cx"> 
</span><del>-FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCELERATED_OVERFLOW_SCROLLING) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_C_LOOP) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_DEVICE_ADAPTATION) $(ENABLE_CSS_IMAGE_ORIENTATION) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_CUSTOM_SCHEME_HANDLER) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DASHBOARD_SUPPORT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_ENCRYPTED_MEDIA) $(ENABLE_EXPERIMENTAL_
 FEATURES) $(ENABLE_FAST_JIT_PERMISSIONS) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FTL_JIT) $(ENABLE_FULLSCREEN_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_ICONDATABASE) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_INTL) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_JIT) $(ENABLE_KEYBOARD_CODE_ATTRIBUTE) $(ENABLE_KEYBOARD_KEY_ATTRIBUTE) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MAC_VIDEO_TOOLBOX) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SOURCE) $(ENABLE_MEDIA_STATIS
 TICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_CONTENT_UTILS) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NOTIFICATIONS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_WEB_CRYPTO) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_USERSELECT_ALL) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_RTC) $(ENABLE_WEBASSEMBLY) $(ENABLE_WEBASS
 EMBLY_STREAMING_API) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBMETAL) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
</del><ins>+FEATURE_DEFINES = $(ENABLE_3D_TRANSFORMS) $(ENABLE_ACCELERATED_2D_CANVAS) $(ENABLE_ACCELERATED_OVERFLOW_SCROLLING) $(ENABLE_APPLE_PAY) $(ENABLE_APPLE_PAY_SESSION_V3) $(ENABLE_APPLE_PAY_SESSION_V4) $(ENABLE_APPLICATION_MANIFEST) $(ENABLE_ATTACHMENT_ELEMENT) $(ENABLE_AVF_CAPTIONS) $(ENABLE_C_LOOP) $(ENABLE_CACHE_PARTITIONING) $(ENABLE_CHANNEL_MESSAGING) $(ENABLE_CONTENT_FILTERING) $(ENABLE_CSS3_TEXT) $(ENABLE_CSS_BOX_DECORATION_BREAK) $(ENABLE_CSS_COMPOSITING) $(ENABLE_CSS_DEVICE_ADAPTATION) $(ENABLE_CSS_IMAGE_ORIENTATION) $(ENABLE_CSS_IMAGE_RESOLUTION) $(ENABLE_CSS_PAINTING_API) $(ENABLE_CSS_SCROLL_SNAP) $(ENABLE_CSS_SELECTORS_LEVEL4) $(ENABLE_CSS_TRAILING_WORD) $(ENABLE_CSS_TYPED_OM) $(ENABLE_CURSOR_VISIBILITY) $(ENABLE_CUSTOM_SCHEME_HANDLER) $(ENABLE_CSS_CONIC_GRADIENTS) $(ENABLE_DARK_MODE_CSS) $(ENABLE_DASHBOARD_SUPPORT) $(ENABLE_DATA_INTERACTION) $(ENABLE_DATACUE_VALUE) $(ENABLE_DATALIST_ELEMENT) $(ENABLE_DEVICE_ORIENTATION) $(ENABLE_DRAG_SUPPORT) $(ENABLE_ENCRYPTED_ME
 DIA) $(ENABLE_EXPERIMENTAL_FEATURES) $(ENABLE_FAST_JIT_PERMISSIONS) $(ENABLE_FILTERS_LEVEL_2) $(ENABLE_FTL_JIT) $(ENABLE_FULLSCREEN_API) $(ENABLE_GAMEPAD) $(ENABLE_GEOLOCATION) $(ENABLE_ICONDATABASE) $(ENABLE_INDEXED_DATABASE) $(ENABLE_INDEXED_DATABASE_IN_WORKERS) $(ENABLE_INPUT_TYPE_COLOR) $(ENABLE_INPUT_TYPE_DATE) $(ENABLE_INPUT_TYPE_DATETIME_INCOMPLETE) $(ENABLE_INPUT_TYPE_DATETIMELOCAL) $(ENABLE_INPUT_TYPE_MONTH) $(ENABLE_INPUT_TYPE_TIME) $(ENABLE_INPUT_TYPE_WEEK) $(ENABLE_INTERSECTION_OBSERVER) $(ENABLE_INTL) $(ENABLE_IOS_GESTURE_EVENTS) $(ENABLE_IOS_TOUCH_EVENTS) $(ENABLE_JIT) $(ENABLE_KEYBOARD_CODE_ATTRIBUTE) $(ENABLE_KEYBOARD_KEY_ATTRIBUTE) $(ENABLE_LAYOUT_FORMATTING_CONTEXT) $(ENABLE_LEGACY_CSS_VENDOR_PREFIXES) $(ENABLE_LEGACY_CUSTOM_PROTOCOL_MANAGER) $(ENABLE_LEGACY_ENCRYPTED_MEDIA) $(ENABLE_LETTERPRESS) $(ENABLE_MAC_GESTURE_EVENTS) $(ENABLE_MAC_VIDEO_TOOLBOX) $(ENABLE_MATHML) $(ENABLE_MEDIA_CAPTURE) $(ENABLE_MEDIA_CONTROLS_SCRIPT) $(ENABLE_MEDIA_SESSION) $(ENABLE_MEDIA_SO
 URCE) $(ENABLE_MEDIA_STATISTICS) $(ENABLE_MEDIA_STREAM) $(ENABLE_METER_ELEMENT) $(ENABLE_MHTML) $(ENABLE_MOUSE_CURSOR_SCALE) $(ENABLE_NAVIGATOR_CONTENT_UTILS) $(ENABLE_NAVIGATOR_STANDALONE) $(ENABLE_NOTIFICATIONS) $(ENABLE_PAYMENT_REQUEST) $(ENABLE_PDFKIT_PLUGIN) $(ENABLE_POINTER_LOCK) $(ENABLE_PUBLIC_SUFFIX_LIST) $(ENABLE_QUOTA) $(ENABLE_REMOTE_INSPECTOR) $(ENABLE_RESOLUTION_MEDIA_QUERY) $(ENABLE_RESOURCE_LOAD_STATISTICS) $(ENABLE_RESOURCE_USAGE) $(ENABLE_RUBBER_BANDING) $(ENABLE_SERVICE_CONTROLS) $(ENABLE_SERVICE_WORKER) $(ENABLE_SPEECH_SYNTHESIS) $(ENABLE_STREAMS_API) $(ENABLE_WEB_CRYPTO) $(ENABLE_SVG_FONTS) $(ENABLE_TELEPHONE_NUMBER_DETECTION) $(ENABLE_TEXT_AUTOSIZING) $(ENABLE_TOUCH_EVENTS) $(ENABLE_USER_MESSAGE_HANDLERS) $(ENABLE_USERSELECT_ALL) $(ENABLE_VARIATION_FONTS) $(ENABLE_VIDEO) $(ENABLE_VIDEO_PRESENTATION_MODE) $(ENABLE_VIDEO_TRACK) $(ENABLE_VIDEO_USES_ELEMENT_FULLSCREEN) $(ENABLE_WEB_API_STATISTICS) $(ENABLE_WEB_AUDIO) $(ENABLE_WEB_AUTHN) $(ENABLE_WEB_RTC) $(ENABLE_W
 EBASSEMBLY) $(ENABLE_WEBASSEMBLY_STREAMING_API) $(ENABLE_WEBGL) $(ENABLE_WEBGL2) $(ENABLE_WEBGPU) $(ENABLE_WEBMETAL) $(ENABLE_WIRELESS_PLAYBACK_TARGET) $(ENABLE_XSLT);
</ins></span></pre>
</div>
</div>

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