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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/209417">209417</a></dd>
<dt>Author</dt> <dd>weinig@apple.com</dd>
<dt>Date</dt> <dd>2016-12-06 13:52:18 -0800 (Tue, 06 Dec 2016)</dd>
</dl>

<h3>Log Message</h3>
<pre>REGRESSION: media/track LayoutTests are flaky failures
https://bugs.webkit.org/show_bug.cgi?id=165432

Reviewed by Antoine Quint.

RenderThemeMac was caching the media controls script / style sheets
and not being invalidated when the RuntimeEnabledFeatures changed. So,
we can just cache both.

* bindings/generic/RuntimeEnabledFeatures.h:
Initialize m_areModernMediaControlsEnabled to false.

* rendering/RenderThemeMac.h:
* rendering/RenderThemeMac.mm:
(WebCore::RenderThemeMac::mediaControlsStyleSheet):
(WebCore::RenderThemeMac::mediaControlsScript):
Have separate caches for the modern and legacy media control scripts/style sheets.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCorebindingsgenericRuntimeEnabledFeaturesh">trunk/Source/WebCore/bindings/generic/RuntimeEnabledFeatures.h</a></li>
<li><a href="#trunkSourceWebCorerenderingRenderThemeMach">trunk/Source/WebCore/rendering/RenderThemeMac.h</a></li>
<li><a href="#trunkSourceWebCorerenderingRenderThemeMacmm">trunk/Source/WebCore/rendering/RenderThemeMac.mm</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (209416 => 209417)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog        2016-12-06 21:45:00 UTC (rev 209416)
+++ trunk/Source/WebCore/ChangeLog        2016-12-06 21:52:18 UTC (rev 209417)
</span><span class="lines">@@ -1,5 +1,25 @@
</span><span class="cx"> 2016-12-06  Sam Weinig  &lt;sam@webkit.org&gt;
</span><span class="cx"> 
</span><ins>+        REGRESSION: media/track LayoutTests are flaky failures
+        https://bugs.webkit.org/show_bug.cgi?id=165432
+
+        Reviewed by Antoine Quint.
+
+        RenderThemeMac was caching the media controls script / style sheets
+        and not being invalidated when the RuntimeEnabledFeatures changed. So,
+        we can just cache both.
+
+        * bindings/generic/RuntimeEnabledFeatures.h:
+        Initialize m_areModernMediaControlsEnabled to false.
+
+        * rendering/RenderThemeMac.h:
+        * rendering/RenderThemeMac.mm:
+        (WebCore::RenderThemeMac::mediaControlsStyleSheet):
+        (WebCore::RenderThemeMac::mediaControlsScript):
+        Have separate caches for the modern and legacy media control scripts/style sheets.
+
+2016-12-06  Sam Weinig  &lt;sam@webkit.org&gt;
+
</ins><span class="cx">         DumpRenderTree crashed in com.apple.WebCore: WebCore::MockMediaEndpoint::generateDtlsInfo const + 23
</span><span class="cx">         https://bugs.webkit.org/show_bug.cgi?id=165486
</span><span class="cx">         &lt;rdar://problem/29149588&gt;
</span></span></pre></div>
<a id="trunkSourceWebCorebindingsgenericRuntimeEnabledFeaturesh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/bindings/generic/RuntimeEnabledFeatures.h (209416 => 209417)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/bindings/generic/RuntimeEnabledFeatures.h        2016-12-06 21:45:00 UTC (rev 209416)
+++ trunk/Source/WebCore/bindings/generic/RuntimeEnabledFeatures.h        2016-12-06 21:52:18 UTC (rev 209417)
</span><span class="lines">@@ -258,7 +258,7 @@
</span><span class="cx">     // Never instantiate.
</span><span class="cx">     RuntimeEnabledFeatures();
</span><span class="cx"> 
</span><del>-    bool m_areModernMediaControlsEnabled;
</del><ins>+    bool m_areModernMediaControlsEnabled { false };
</ins><span class="cx">     bool m_isLocalStorageEnabled;
</span><span class="cx">     bool m_isSessionStorageEnabled;
</span><span class="cx">     bool m_isWebkitNotificationsEnabled;
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingRenderThemeMach"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/RenderThemeMac.h (209416 => 209417)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/RenderThemeMac.h        2016-12-06 21:45:00 UTC (rev 209416)
+++ trunk/Source/WebCore/rendering/RenderThemeMac.h        2016-12-06 21:52:18 UTC (rev 209417)
</span><span class="lines">@@ -245,7 +245,9 @@
</span><span class="cx"> 
</span><span class="cx">     RetainPtr&lt;WebCoreRenderThemeNotificationObserver&gt; m_notificationObserver;
</span><span class="cx"> 
</span><ins>+    String m_legacyMediaControlsScript;
</ins><span class="cx">     String m_mediaControlsScript;
</span><ins>+    String m_legacyMediaControlsStyleSheet;
</ins><span class="cx">     String m_mediaControlsStyleSheet;
</span><span class="cx"> };
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingRenderThemeMacmm"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/RenderThemeMac.mm (209416 => 209417)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/RenderThemeMac.mm        2016-12-06 21:45:00 UTC (rev 209416)
+++ trunk/Source/WebCore/rendering/RenderThemeMac.mm        2016-12-06 21:52:18 UTC (rev 209417)
</span><span class="lines">@@ -232,15 +232,15 @@
</span><span class="cx"> String RenderThemeMac::mediaControlsStyleSheet()
</span><span class="cx"> {
</span><span class="cx"> #if ENABLE(MEDIA_CONTROLS_SCRIPT)
</span><del>-    if (m_mediaControlsStyleSheet.isEmpty()) {
-        StringBuilder styleSheetBuilder;
-        if (RuntimeEnabledFeatures::sharedFeatures().modernMediaControlsEnabled())
-            styleSheetBuilder.append([NSString stringWithContentsOfFile:[[NSBundle bundleForClass:[WebCoreRenderThemeBundle class]] pathForResource:@&quot;modern-media-controls&quot; ofType:@&quot;css&quot; inDirectory:@&quot;modern-media-controls&quot;] encoding:NSUTF8StringEncoding error:nil]);
-        else
-            styleSheetBuilder.append([NSString stringWithContentsOfFile:[[NSBundle bundleForClass:[WebCoreRenderThemeBundle class]] pathForResource:@&quot;mediaControlsApple&quot; ofType:@&quot;css&quot;] encoding:NSUTF8StringEncoding error:nil]);
-        m_mediaControlsStyleSheet = styleSheetBuilder.toString();
</del><ins>+    if (RuntimeEnabledFeatures::sharedFeatures().modernMediaControlsEnabled()) {
+        if (m_mediaControlsStyleSheet.isEmpty())
+            m_mediaControlsStyleSheet = [NSString stringWithContentsOfFile:[[NSBundle bundleForClass:[WebCoreRenderThemeBundle class]] pathForResource:@&quot;modern-media-controls&quot; ofType:@&quot;css&quot; inDirectory:@&quot;modern-media-controls&quot;] encoding:NSUTF8StringEncoding error:nil];
+        return m_mediaControlsStyleSheet;
</ins><span class="cx">     }
</span><del>-    return m_mediaControlsStyleSheet;
</del><ins>+
+    if (m_legacyMediaControlsStyleSheet.isEmpty())
+        m_legacyMediaControlsStyleSheet = [NSString stringWithContentsOfFile:[[NSBundle bundleForClass:[WebCoreRenderThemeBundle class]] pathForResource:@&quot;mediaControlsApple&quot; ofType:@&quot;css&quot;] encoding:NSUTF8StringEncoding error:nil];
+    return m_legacyMediaControlsStyleSheet;
</ins><span class="cx"> #else
</span><span class="cx">     return emptyString();
</span><span class="cx"> #endif
</span><span class="lines">@@ -249,19 +249,28 @@
</span><span class="cx"> String RenderThemeMac::mediaControlsScript()
</span><span class="cx"> {
</span><span class="cx"> #if ENABLE(MEDIA_CONTROLS_SCRIPT)
</span><del>-    if (m_mediaControlsScript.isEmpty()) {
-        StringBuilder scriptBuilder;
-        NSBundle *bundle = [NSBundle bundleForClass:[WebCoreRenderThemeBundle class]];
-        if (RuntimeEnabledFeatures::sharedFeatures().modernMediaControlsEnabled()) {
</del><ins>+    if (RuntimeEnabledFeatures::sharedFeatures().modernMediaControlsEnabled()) {
+        if (m_mediaControlsScript.isEmpty()) {
+            NSBundle *bundle = [NSBundle bundleForClass:[WebCoreRenderThemeBundle class]];
+
+            StringBuilder scriptBuilder;
</ins><span class="cx">             scriptBuilder.append([NSString stringWithContentsOfFile:[bundle pathForResource:@&quot;modern-media-controls-localized-strings.js&quot; ofType:@&quot;js&quot;] encoding:NSUTF8StringEncoding error:nil]);
</span><span class="cx">             scriptBuilder.append([NSString stringWithContentsOfFile:[bundle pathForResource:@&quot;modern-media-controls&quot; ofType:@&quot;js&quot; inDirectory:@&quot;modern-media-controls&quot;] encoding:NSUTF8StringEncoding error:nil]);
</span><del>-        } else {
-            scriptBuilder.append([NSString stringWithContentsOfFile:[bundle pathForResource:@&quot;mediaControlsLocalizedStrings&quot; ofType:@&quot;js&quot;] encoding:NSUTF8StringEncoding error:nil]);
-            scriptBuilder.append([NSString stringWithContentsOfFile:[bundle pathForResource:@&quot;mediaControlsApple&quot; ofType:@&quot;js&quot;] encoding:NSUTF8StringEncoding error:nil]);
</del><ins>+            m_mediaControlsScript = scriptBuilder.toString();
</ins><span class="cx">         }
</span><del>-        m_mediaControlsScript = scriptBuilder.toString();
</del><ins>+        return m_mediaControlsScript;
</ins><span class="cx">     }
</span><del>-    return m_mediaControlsScript;
</del><ins>+
+    if (m_legacyMediaControlsScript.isEmpty()) {
+        NSBundle *bundle = [NSBundle bundleForClass:[WebCoreRenderThemeBundle class]];
+
+        StringBuilder scriptBuilder;
+        scriptBuilder.append([NSString stringWithContentsOfFile:[bundle pathForResource:@&quot;mediaControlsLocalizedStrings&quot; ofType:@&quot;js&quot;] encoding:NSUTF8StringEncoding error:nil]);
+        scriptBuilder.append([NSString stringWithContentsOfFile:[bundle pathForResource:@&quot;mediaControlsApple&quot; ofType:@&quot;js&quot;] encoding:NSUTF8StringEncoding error:nil]);
+
+        m_legacyMediaControlsScript = scriptBuilder.toString();
+    }
+    return m_legacyMediaControlsScript;
</ins><span class="cx"> #else
</span><span class="cx">     return emptyString();
</span><span class="cx"> #endif
</span></span></pre>
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