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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/183823">183823</a></dd>
<dt>Author</dt> <dd>bfulgham@apple.com</dd>
<dt>Date</dt> <dd>2015-05-05 13:12:10 -0700 (Tue, 05 May 2015)</dd>
</dl>

<h3>Log Message</h3>
<pre>Add overflow scroll-snap tests
https://bugs.webkit.org/show_bug.cgi?id=144591

Reviewed by Simon Fraser.

* platform/mac-wk2/TextExpectations: Mark overflow test as flaky while I investigate.
* platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/resources: Added.
* platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/resources/horizontal-mainframe.html: Added.
* platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/resources/vertical-mainframe.html: Added.
* platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-destination-lock-up-expected.txt: Added.
* platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-destination-lock-up.html: Added.
* platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-iframe-expected.txt: Added.
* platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-iframe.html: Added.
* platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-overflow-expected.txt: Added.
* platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-overflow.html: Added.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsChangeLog">trunk/LayoutTests/ChangeLog</a></li>
<li><a href="#trunkLayoutTestsplatformmacwk2TestExpectations">trunk/LayoutTests/platform/mac-wk2/TestExpectations</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li>trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/resources/</li>
<li><a href="#trunkLayoutTestsplatformmacwk2tileddrawingscrollingscrollsnapresourceshorizontalmainframehtml">trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/resources/horizontal-mainframe.html</a></li>
<li><a href="#trunkLayoutTestsplatformmacwk2tileddrawingscrollingscrollsnapresourcesverticalmainframehtml">trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/resources/vertical-mainframe.html</a></li>
<li><a href="#trunkLayoutTestsplatformmacwk2tileddrawingscrollingscrollsnapscrollsnapdestinationlockupexpectedtxt">trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-destination-lock-up-expected.txt</a></li>
<li><a href="#trunkLayoutTestsplatformmacwk2tileddrawingscrollingscrollsnapscrollsnapdestinationlockuphtml">trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-destination-lock-up.html</a></li>
<li><a href="#trunkLayoutTestsplatformmacwk2tileddrawingscrollingscrollsnapscrollsnapiframeexpectedtxt">trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-iframe-expected.txt</a></li>
<li><a href="#trunkLayoutTestsplatformmacwk2tileddrawingscrollingscrollsnapscrollsnapiframehtml">trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-iframe.html</a></li>
<li><a href="#trunkLayoutTestsplatformmacwk2tileddrawingscrollingscrollsnapscrollsnapmandatoryoverflowexpectedtxt">trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-overflow-expected.txt</a></li>
<li><a href="#trunkLayoutTestsplatformmacwk2tileddrawingscrollingscrollsnapscrollsnapmandatoryoverflowhtml">trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-overflow.html</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (183822 => 183823)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog        2015-05-05 19:35:21 UTC (rev 183822)
+++ trunk/LayoutTests/ChangeLog        2015-05-05 20:12:10 UTC (rev 183823)
</span><span class="lines">@@ -1,3 +1,21 @@
</span><ins>+2015-05-05  Brent Fulgham  &lt;bfulgham@apple.com&gt;
+
+        Add overflow scroll-snap tests
+        https://bugs.webkit.org/show_bug.cgi?id=144591
+
+        Reviewed by Simon Fraser.
+
+        * platform/mac-wk2/TextExpectations: Mark overflow test as flaky while I investigate.
+        * platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/resources: Added.
+        * platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/resources/horizontal-mainframe.html: Added.
+        * platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/resources/vertical-mainframe.html: Added.
+        * platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-destination-lock-up-expected.txt: Added.
+        * platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-destination-lock-up.html: Added.
+        * platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-iframe-expected.txt: Added.
+        * platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-iframe.html: Added.
+        * platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-overflow-expected.txt: Added.
+        * platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-overflow.html: Added.
+
</ins><span class="cx"> 2015-05-05  Roger Fong  &lt;roger_fong@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Media control volume slider is opaque.
</span></span></pre></div>
<a id="trunkLayoutTestsplatformmacwk2TestExpectations"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/platform/mac-wk2/TestExpectations (183822 => 183823)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/platform/mac-wk2/TestExpectations        2015-05-05 19:35:21 UTC (rev 183822)
+++ trunk/LayoutTests/platform/mac-wk2/TestExpectations        2015-05-05 20:12:10 UTC (rev 183823)
</span><span class="lines">@@ -523,3 +523,10 @@
</span><span class="cx"> ########################################
</span><span class="cx"> 
</span><span class="cx"> http/tests/contentextensions [ Pass ]
</span><ins>+
+########################################
+### START OF (1) New scroll-snap flake
+platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-overflow.html [ Timeout Pass ]
+
+### END OF (1) scroll-snap flake
+########################################
</ins></span></pre></div>
<a id="trunkLayoutTestsplatformmacwk2tileddrawingscrollingscrollsnapresourceshorizontalmainframehtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/resources/horizontal-mainframe.html (0 => 183823)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/resources/horizontal-mainframe.html                                (rev 0)
+++ trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/resources/horizontal-mainframe.html        2015-05-05 20:12:10 UTC (rev 183823)
</span><span class="lines">@@ -0,0 +1,34 @@
</span><ins>+&lt;!DOCTYPE HTML&gt;
+&lt;html&gt;
+    &lt;head&gt;
+        &lt;style&gt;
+            .horizontalGallery {
+                width: 600vw;
+                height: 100vh;
+                margin: 0;
+                padding: 0;
+                -webkit-scroll-snap-points-x: repeat(100vw);
+                -webkit-scroll-snap-type: mandatory;
+            }
+            .colorBox {
+                height: 100vh;
+                width: 100vw;
+                float: left;
+            }
+            #item0 { background-color: red; }
+            #item1 { background-color: green; }
+            #item2 { background-color: blue; }
+            #item3 { background-color: aqua; }
+            #item4 { background-color: yellow; }
+            #item5 { background-color: fuchsia; }
+        &lt;/style&gt;
+    &lt;/head&gt;
+    &lt;body class=&quot;horizontalGallery&quot;&gt;
+        &lt;div id=&quot;item0&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+        &lt;div id=&quot;item1&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+        &lt;div id=&quot;item2&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+        &lt;div id=&quot;item3&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+        &lt;div id=&quot;item4&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+        &lt;div id=&quot;item5&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+    &lt;/body&gt;
+&lt;/html&gt;
</ins><span class="cx">\ No newline at end of file
</span></span></pre></div>
<a id="trunkLayoutTestsplatformmacwk2tileddrawingscrollingscrollsnapresourcesverticalmainframehtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/resources/vertical-mainframe.html (0 => 183823)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/resources/vertical-mainframe.html                                (rev 0)
+++ trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/resources/vertical-mainframe.html        2015-05-05 20:12:10 UTC (rev 183823)
</span><span class="lines">@@ -0,0 +1,34 @@
</span><ins>+&lt;!DOCTYPE HTML&gt;
+&lt;html&gt;
+    &lt;head&gt;
+        &lt;style&gt;
+            .verticalGallery {
+                width: 100vw;
+                height: 600vh;
+                margin: 0;
+                padding: 0;
+                -webkit-scroll-snap-points-y: repeat(100vh);
+                -webkit-scroll-snap-type: mandatory;
+            }
+            .colorBox {
+                height: 100vh;
+                width: 100vw;
+                float: left;
+            }
+            #item0 { background-color: red; }
+            #item1 { background-color: green; }
+            #item2 { background-color: blue; }
+            #item3 { background-color: aqua; }
+            #item4 { background-color: yellow; }
+            #item5 { background-color: fuchsia; }
+        &lt;/style&gt;
+    &lt;/head&gt;
+    &lt;body class=&quot;verticalGallery&quot;&gt;
+        &lt;div id=&quot;item0&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+        &lt;div id=&quot;item1&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+        &lt;div id=&quot;item2&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+        &lt;div id=&quot;item3&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+        &lt;div id=&quot;item4&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+        &lt;div id=&quot;item5&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+    &lt;/body&gt;
+&lt;/html&gt;
</ins><span class="cx">\ No newline at end of file
</span></span></pre></div>
<a id="trunkLayoutTestsplatformmacwk2tileddrawingscrollingscrollsnapscrollsnapdestinationlockupexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-destination-lock-up-expected.txt (0 => 183823)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-destination-lock-up-expected.txt                                (rev 0)
+++ trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-destination-lock-up-expected.txt        2015-05-05 20:12:10 UTC (rev 183823)
</span><span class="lines">@@ -0,0 +1,20 @@
</span><ins>+This test passes if it doesn't time out.
+Tests infinite loop calculating scroll snap point offsets.
+
+On success, you will see a series of &quot;PASS&quot; messages, followed by &quot;TEST COMPLETE&quot;.
+
+
+PASS lockUpSnapCoordinate.style['-webkit-scroll-snap-type'] is &quot;&quot;
+PASS window.getComputedStyle(lockUpSnapCoordinate).getPropertyValue('-webkit-scroll-snap-type') is &quot;mandatory&quot;
+PASS lockUpSnapCoordinate.style['-webkit-scroll-snap-points-x'] is &quot;&quot;
+PASS window.getComputedStyle(lockUpSnapCoordinate).getPropertyValue('-webkit-scroll-snap-points-x') is &quot;repeat(100%)&quot;
+PASS lockUpSnapCoordinate.style['-webkit-scroll-snap-points-y'] is &quot;&quot;
+PASS window.getComputedStyle(lockUpSnapCoordinate).getPropertyValue('-webkit-scroll-snap-points-y') is &quot;repeat(100%)&quot;
+PASS lockUpSnapCoordinate.style['-webkit-scroll-snap-destination'] is &quot;&quot;
+PASS window.getComputedStyle(lockUpSnapCoordinate).getPropertyValue('-webkit-scroll-snap-destination') is &quot;100% 100%&quot;
+PASS lockUpSnapCoordinate.style['-webkit-scroll-snap-coordinate'] is &quot;&quot;
+PASS window.getComputedStyle(lockUpSnapCoordinate).getPropertyValue('-webkit-scroll-snap-coordinate') is &quot;none&quot;
+PASS successfullyParsed is true
+
+TEST COMPLETE
+
</ins></span></pre></div>
<a id="trunkLayoutTestsplatformmacwk2tileddrawingscrollingscrollsnapscrollsnapdestinationlockuphtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-destination-lock-up.html (0 => 183823)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-destination-lock-up.html                                (rev 0)
+++ trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-destination-lock-up.html        2015-05-05 20:12:10 UTC (rev 183823)
</span><span class="lines">@@ -0,0 +1,71 @@
</span><ins>+&lt;!DOCTYPE html&gt;
+&lt;html&gt;
+    &lt;head&gt;
+        &lt;style&gt;
+            .horizontalGallery {
+                width: 400px;
+                height: 50px;
+                overflow-y: hidden;
+                overflow-x: auto;
+            }
+            .horizontalGalleryDrawer {
+                width: 3000px;
+                height: 50px;
+            }
+            .colorBox {
+                height: 50px;
+                width: 400px;
+                float: left;
+            }
+
+            .lockUpSnapCoordinate {
+                -webkit-scroll-snap-type: mandatory;
+                -webkit-scroll-snap-points-x: repeat(100%);
+                -webkit-scroll-snap-points-y: repeat(100%);
+                -webkit-scroll-snap-destination: 100% 100%;
+                -webkit-scroll-snap-coordinate: initial;
+            }
+
+            #item0 { background-color: red; }
+            #item1 { background-color: green; }
+            #item2 { background-color: blue; }
+            #item3 { background-color: aqua; }
+            #item4 { background-color: yellow; }
+            #item5 { background-color: fuchsia; }
+        &lt;/style&gt;
+        &lt;script src=&quot;../../../../../resources/js-test-pre.js&quot;&gt;&lt;/script&gt;
+    &lt;/head&gt;
+    &lt;body&gt;
+        &lt;div style=&quot;width: 400px&quot;&gt;
+            &lt;div id=&quot;lockUpSnapCoordinate&quot; class=&quot;horizontalGallery lockUpSnapCoordinate&quot;&gt;
+                &lt;div class=&quot;horizontalGalleryDrawer&quot;&gt;
+                    &lt;div id=&quot;item0&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                    &lt;div id=&quot;item1&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                    &lt;div id=&quot;item2&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                    &lt;div id=&quot;item3&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                    &lt;div id=&quot;item4&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                    &lt;div id=&quot;item5&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                &lt;/div&gt;
+            &lt;/div&gt;
+        &lt;/div&gt;
+        This test passes if it doesn't time out.
+        &lt;div id=&quot;console&quot;&gt;&lt;/div&gt;
+        &lt;script&gt;
+        description(&quot;Tests infinite loop calculating scroll snap point offsets.&quot;);
+
+        var lockUpSnapCoordinate = document.getElementById('lockUpSnapCoordinate');
+        shouldBeEmptyString(&quot;lockUpSnapCoordinate.style['-webkit-scroll-snap-type']&quot;);
+        shouldBeEqualToString(&quot;window.getComputedStyle(lockUpSnapCoordinate).getPropertyValue('-webkit-scroll-snap-type')&quot;, &quot;mandatory&quot;);
+        shouldBeEmptyString(&quot;lockUpSnapCoordinate.style['-webkit-scroll-snap-points-x']&quot;);
+        shouldBeEqualToString(&quot;window.getComputedStyle(lockUpSnapCoordinate).getPropertyValue('-webkit-scroll-snap-points-x')&quot;, &quot;repeat(100%)&quot;);
+        shouldBeEmptyString(&quot;lockUpSnapCoordinate.style['-webkit-scroll-snap-points-y']&quot;);
+        shouldBeEqualToString(&quot;window.getComputedStyle(lockUpSnapCoordinate).getPropertyValue('-webkit-scroll-snap-points-y')&quot;, &quot;repeat(100%)&quot;);
+        shouldBeEmptyString(&quot;lockUpSnapCoordinate.style['-webkit-scroll-snap-destination']&quot;);
+        shouldBeEqualToString(&quot;window.getComputedStyle(lockUpSnapCoordinate).getPropertyValue('-webkit-scroll-snap-destination')&quot;, &quot;100% 100%&quot;);
+        shouldBeEmptyString(&quot;lockUpSnapCoordinate.style['-webkit-scroll-snap-coordinate']&quot;);
+        shouldBeEqualToString(&quot;window.getComputedStyle(lockUpSnapCoordinate).getPropertyValue('-webkit-scroll-snap-coordinate')&quot;, &quot;none&quot;);
+        &lt;/script&gt;
+        &lt;script src=&quot;../../../../../resources/js-test-post.js&quot;&gt;&lt;/script&gt;
+    &lt;/body&gt;
+&lt;/html&gt;
+
</ins></span></pre></div>
<a id="trunkLayoutTestsplatformmacwk2tileddrawingscrollingscrollsnapscrollsnapiframeexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-iframe-expected.txt (0 => 183823)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-iframe-expected.txt                                (rev 0)
+++ trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-iframe-expected.txt        2015-05-05 20:12:10 UTC (rev 183823)
</span><span class="lines">@@ -0,0 +1,17 @@
</span><ins>+Tests that the scroll-snap feature works properly in iframes.

+PASS successfullyParsed is true
+
+TEST COMPLETE
+Testing scroll-snap glide for horizontalTarget:
+PASS div scrolled to next window.
+Testing scroll-snap snap for horizontalTarget:
+PASS div honored snap points.
+Testing scroll-snap glide for verticalTarget:
+PASS div scrolled to next window.
+Testing scroll-snap snap for verticalTarget:
+PASS div honored snap points.
+PASS successfullyParsed is true
+
+TEST COMPLETE
+
</ins></span></pre></div>
<a id="trunkLayoutTestsplatformmacwk2tileddrawingscrollingscrollsnapscrollsnapiframehtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-iframe.html (0 => 183823)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-iframe.html                                (rev 0)
+++ trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-iframe.html        2015-05-05 20:12:10 UTC (rev 183823)
</span><span class="lines">@@ -0,0 +1,173 @@
</span><ins>+&lt;!DOCTYPE html&gt;
+&lt;html&gt;
+    &lt;head&gt;
+        &lt;style&gt;
+            .horizontalGallery {
+                width: 300px;
+                height: 300px;
+                overflow-y: hidden;
+                overflow-x: auto;
+                margin: 2px;
+            }
+            .verticalGallery {
+                width: 300px;
+                height: 300px;
+                display: inline-block;
+                overflow-x: hidden;
+                overflow-y: auto;
+                margin: 2px;
+            }
+        &lt;/style&gt;
+        &lt;script src=&quot;../../../../../resources/js-test-pre.js&quot;&gt;&lt;/script&gt;
+        &lt;script&gt;
+        var iframeScrollPositionBeforeGlide;
+        var divScrollPositionBeforeSnap;
+
+        function locationInWindowCoordinates(element)
+        {
+            var position = {};
+            position.x = element.offsetLeft;
+            position.y = element.offsetTop;
+
+            while (element.offsetParent) {
+                position.x = position.x + element.offsetParent.offsetLeft;
+                position.y = position.y + element.offsetParent.offsetTop;
+                if (element == document.getElementsByTagName(&quot;body&quot;)[0])
+                    break;
+
+                element = element.offsetParent;
+            }
+
+            return position;
+        }
+
+        function finishTest()
+        {
+            finishJSTest();
+            testRunner.notifyDone();            
+        }
+
+        function checkForScrollSnap(targetLabel)
+        {
+            var iframeTarget = document.getElementById(targetLabel);
+
+            var actualPosition = iframeTarget.scrollTop;
+            if (targetLabel == 'horizontalTarget')
+                actualPosition = iframeTarget.scrollLeft;
+
+            // The div should have snapped back to the previous position
+            if (actualPosition != divScrollPositionBeforeSnap)
+                testFailed(&quot;div did not snap back to proper location for &quot; + targetLabel +&quot;. Expected &quot; + divScrollPositionBeforeSnap + &quot;, but got &quot; + actualPosition);
+            else
+                testPassed(&quot;div honored snap points.&quot;);
+
+            if (targetLabel == 'horizontalTarget')
+                setTimeout(scrollGlideTest('verticalTarget'), 0);
+            else   
+                finishTest();
+        }
+
+        function scrollSnapTest(targetLabel)
+        {
+            debug(&quot;Testing scroll-snap snap for &quot; + targetLabel + &quot;:&quot;);
+            var iframeTarget = document.getElementById(targetLabel);

+            var dx = 0;
+            var dy = 0;
+            if (targetLabel == 'horizontalTarget') {
+                divScrollPositionBeforeSnap = iframeTarget.scrollLeft;
+                dx = -1;
+            } else {
+                divScrollPositionBeforeSnap = iframeTarget.scrollTop;
+                dy = -1;
+            }
+
+            var startPosX = iframeTarget.offsetLeft + 20;
+            var startPosY = iframeTarget.offsetTop + 20;
+            eventSender.mouseMoveTo(startPosX, startPosY); // Make sure we are just outside the iFrame
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'began', 'none', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'changed', 'none', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'changed', 'none', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'ended', 'none', false);
+            eventSender.callAfterScrollingCompletes(function() { return checkForScrollSnap(targetLabel); });
+        }
+
+        function checkForScrollGlide(targetLabel)
+        {
+            var iframeTarget = document.getElementById(targetLabel);
+            var iframeBody = window.frames[targetLabel].document.body;
+
+            var actualPosition = iframeBody.scrollTop;
+            var expectedPosition = iframeTarget.clientHeight;
+            if (targetLabel == 'horizontalTarget') {
+                actualPosition = iframeBody.scrollLeft;
+                expectedPosition = iframeTarget.clientWidth;
+            }
+
+            // The div should have scrolled (glided) to the next snap point.
+            if (actualPosition == expectedPosition)
+                testPassed(&quot;div scrolled to next window.&quot;);
+            else
+                testFailed(&quot;div did not honor snap points. Expected &quot; + expectedPosition + &quot;, but got &quot; + actualPosition);
+
+            setTimeout(scrollSnapTest(targetLabel), 0);
+        }
+
+        function scrollGlideTest(targetLabel)
+        {
+            debug(&quot;Testing scroll-snap glide for &quot; + targetLabel + &quot;:&quot;);
+            var iframeTarget = document.getElementById(targetLabel);
+            var iframeBody = window.frames[targetLabel].document.body;

+            var dx = 0;
+            var dy = 0;
+            if (targetLabel == 'horizontalTarget') {
+                iframeScrollPositionBeforeGlide = iframeBody.scrollLeft;
+                dx = -1;
+            } else {
+                iframeScrollPositionBeforeGlide = iframeBody.scrollTop;
+                dy = -1;
+            }
+
+            var windowPosition = locationInWindowCoordinates(iframeTarget);
+
+            var startPosX = windowPosition.x + iframeTarget.clientWidth - 10;
+            var startPosY = windowPosition.y + 50;
+            eventSender.mouseMoveTo(startPosX, startPosY);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'began', 'none', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'changed', 'none', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'changed', 'none', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'changed', 'none', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'ended', 'none', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'none', 'begin', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'none', 'continue', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'none', 'continue', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'none', 'continue', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'none', 'continue', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'none', 'end', false);
+            eventSender.callAfterScrollingCompletes(function() { return checkForScrollGlide(targetLabel); });
+        }
+
+        function onLoad()
+        {
+            if (window.eventSender) {
+                window.jsTestIsAsync = true;
+                testRunner.dumpAsText();
+                testRunner.waitUntilDone();
+
+                eventSender.monitorWheelEvents();
+                setTimeout(scrollGlideTest('horizontalTarget'), 0);
+            }
+        }
+        &lt;/script&gt;
+    &lt;/head&gt;
+    &lt;body onload=&quot;onLoad();&quot;&gt;
+        &lt;div style=&quot;position: relative; width: 300px;&quot;&gt;
+            &lt;div&gt;Tests that the scroll-snap feature works properly in iframes.&lt;/div&gt;
+            &lt;iframe id=&quot;horizontalTarget&quot; class=&quot;horizontalGallery&quot; src=&quot;resources/horizontal-mainframe.html&quot; style=&quot;height: 300px; width: 300px&quot;&gt;&lt;/iframe&gt;
+            &lt;iframe id=&quot;verticalTarget&quot; class=&quot;verticalGallery&quot; src=&quot;resources/vertical-mainframe.html&quot;  style=&quot;height: 300px; width: 300px&quot;&gt;&lt;/iframe&gt;
+            &lt;div id=&quot;console&quot;&gt;&lt;/div&gt;
+        &lt;/div&gt;
+        &lt;script src=&quot;../../../../../resources/js-test-post.js&quot;&gt;&lt;/script&gt;
+    &lt;/body&gt;
+&lt;/html&gt;
</ins><span class="cx">\ No newline at end of file
</span></span></pre></div>
<a id="trunkLayoutTestsplatformmacwk2tileddrawingscrollingscrollsnapscrollsnapmandatoryoverflowexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-overflow-expected.txt (0 => 183823)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-overflow-expected.txt                                (rev 0)
+++ trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-overflow-expected.txt        2015-05-05 20:12:10 UTC (rev 183823)
</span><span class="lines">@@ -0,0 +1,16 @@
</span><ins>+Tests that the scroll-snap feature works properly in overflow regions.
+ PASS successfullyParsed is true
+
+TEST COMPLETE
+Testing scroll-snap glide for horizontalTarget:
+PASS div scrolled to next window.
+Testing scroll-snap snap for horizontalTarget:
+PASS div honored snap points.
+Testing scroll-snap glide for verticalTarget:
+PASS div scrolled to next window.
+Testing scroll-snap snap for verticalTarget:
+PASS div honored snap points.
+PASS successfullyParsed is true
+
+TEST COMPLETE
+
</ins></span></pre></div>
<a id="trunkLayoutTestsplatformmacwk2tileddrawingscrollingscrollsnapscrollsnapmandatoryoverflowhtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-overflow.html (0 => 183823)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-overflow.html                                (rev 0)
+++ trunk/LayoutTests/platform/mac-wk2/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-overflow.html        2015-05-05 20:12:10 UTC (rev 183823)
</span><span class="lines">@@ -0,0 +1,227 @@
</span><ins>+&lt;!DOCTYPE html&gt;
+&lt;html&gt;
+    &lt;head&gt;
+        &lt;style&gt;
+            .horizontalGallery {
+                width: 300px;
+                height: 300px;
+                overflow-y: hidden;
+                overflow-x: auto;
+                margin-bottom: 2px;
+                -webkit-scroll-snap-points-x: repeat(100%);
+                -webkit-scroll-snap-type: mandatory;
+            }
+            .horizontalGalleryDrawer {
+                width: 1800px;
+                height: 300px;
+            }
+            .verticalGallery {
+                width: 300px;
+                height: 300px;
+                display: inline-block;
+                overflow-x: hidden;
+                overflow-y: auto;
+                margin-top: 2px;
+                -webkit-scroll-snap-points-y: repeat(100%);
+                -webkit-scroll-snap-type: mandatory;
+            }
+            .verticalGalleryDrawer {
+                width: 300px;
+                height: 1800px;
+            }
+            .colorBox {
+                height: 300px;
+                width: 300px;
+                float: left;
+            }
+            #itemH0, #itemV0 { background-color: red; }
+            #itemH1, #itemV1 { background-color: green; }
+            #itemH2, #itemV2 { background-color: blue; }
+            #itemH3, #itemV3 { background-color: aqua; }
+            #itemH4, #itemV4 { background-color: yellow; }
+            #itemH5, #itemV5 { background-color: fuchsia; }
+        &lt;/style&gt;
+        &lt;script src=&quot;../../../../../resources/js-test-pre.js&quot;&gt;&lt;/script&gt;
+        &lt;script&gt;
+        var divScrollPositionBeforeGlide;
+        var divScrollPositionBeforeSnap;
+
+        function locationInWindowCoordinates(element)
+        {
+            var position = {};
+            position.x = element.offsetLeft;
+            position.y = element.offsetTop;
+
+            while (element.offsetParent) {
+                position.x = position.x + element.offsetParent.offsetLeft;
+                position.y = position.y + element.offsetParent.offsetTop;
+                if (element == document.getElementsByTagName(&quot;body&quot;)[0])
+                    break;
+
+                element = element.offsetParent;
+            }
+
+            return position;
+        }
+
+        function finishTest()
+        {
+            finishJSTest();
+            testRunner.notifyDone();            
+        }
+
+        function checkForScrollSnap(targetLabel)
+        {
+            var divTarget = document.getElementById(targetLabel);
+
+            var actualPosition = divTarget.scrollTop;
+            if (targetLabel == 'horizontalTarget')
+                actualPosition = divTarget.scrollLeft;
+
+            // The div should have snapped back to the previous position
+            if (actualPosition != divScrollPositionBeforeSnap)
+                testFailed(&quot;div did not snap back to proper location for &quot; + targetLabel +&quot;. Expected &quot; + divScrollPositionBeforeSnap + &quot;, but got &quot; + actualPosition);
+            else
+                testPassed(&quot;div honored snap points.&quot;);
+
+            if (targetLabel == 'horizontalTarget')
+                setTimeout(scrollGlideTest('verticalTarget'), 0);
+            else   
+                finishTest();
+        }
+
+        function scrollSnapTest(targetLabel)
+        {
+            debug(&quot;Testing scroll-snap snap for &quot; + targetLabel + &quot;:&quot;);
+            var divTarget = document.getElementById(targetLabel);

+            var dx = 0;
+            var dy = 0;
+            if (targetLabel == 'horizontalTarget') {
+                divScrollPositionBeforeSnap = divTarget.scrollLeft;
+                dx = -1;
+            } else {
+                divScrollPositionBeforeSnap = divTarget.scrollTop;
+                dy = -1;
+            }
+
+            var startPosX = divTarget.offsetLeft + 20;
+            var startPosY = divTarget.offsetTop + 20;
+            eventSender.mouseMoveTo(startPosX, startPosY); // Make sure we are just outside the iFrame
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'began', 'none', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'changed', 'none', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'changed', 'none', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'ended', 'none', false);
+            eventSender.callAfterScrollingCompletes(function() { return checkForScrollSnap(targetLabel); });
+        }
+
+        function checkForScrollGlide(targetLabel)
+        {
+            var divTarget = document.getElementById(targetLabel);
+
+            var actualPosition = divTarget.scrollTop;
+            var expectedPosition = divTarget.clientHeight;
+            if (targetLabel == 'horizontalTarget') {
+                actualPosition = divTarget.scrollLeft;
+                expectedPosition = divTarget.clientWidth;
+            }
+
+            // The div should have scrolled (glided) to the next snap point.
+            if (actualPosition == expectedPosition)
+                testPassed(&quot;div scrolled to next window.&quot;);
+            else
+                testFailed(&quot;div did not honor snap points. Expected &quot; + expectedPosition + &quot;, but got &quot; + actualPosition);
+
+            setTimeout(scrollSnapTest(targetLabel), 0);
+        }
+
+        function scrollGlideTest(targetLabel)
+        {
+            debug(&quot;Testing scroll-snap glide for &quot; + targetLabel + &quot;:&quot;);
+            var divTarget = document.getElementById(targetLabel);

+            var dx = 0;
+            var dy = 0;
+            if (targetLabel == 'horizontalTarget') {
+                divScrollPositionBeforeGlide = divTarget.scrollLeft;
+                dx = -1;
+            } else {
+                divScrollPositionBeforeGlide = divTarget.scrollTop;
+                dy = -1;
+            }
+
+            var windowPosition = locationInWindowCoordinates(divTarget);
+
+            var startPosX = windowPosition.x + divTarget.clientWidth - 10;
+            var startPosY = windowPosition.y + 50;
+            eventSender.mouseMoveTo(startPosX, startPosY);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'began', 'none', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'changed', 'none', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'changed', 'none', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'changed', 'none', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'ended', 'none', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'none', 'begin', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'none', 'continue', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'none', 'continue', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'none', 'continue', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(dx, dy, 'none', 'continue', false);
+            eventSender.mouseScrollByWithWheelAndMomentumPhases(0, 0, 'none', 'end', false);
+            eventSender.callAfterScrollingCompletes(function() { return checkForScrollGlide(targetLabel); });
+        }
+
+        function onLoad()
+        {
+            if (window.eventSender) {
+                window.jsTestIsAsync = true;
+                testRunner.dumpAsText();
+                testRunner.waitUntilDone();
+
+                eventSender.monitorWheelEvents();
+                setTimeout(scrollGlideTest('horizontalTarget'), 0);
+            } else {
+                var messageLocationH = document.getElementById('itemH0');
+                var message = document.createElement('div');
+                message.innerHTML = &quot;&lt;p&gt;This test is better run under DumpRenderTree.&lt;br/&gt;To manually test it, place the mouse pointer&lt;br/&gt;&quot;
+                    + &quot;inside the red region at the top of the page,&lt;br/&gt;and then use the mouse wheel or a two-finger&lt;br/&gt;swipe to make a&quot;
+                    + &quot;small swipe gesture with&lt;br/&gt;some momentum.&lt;br/&gt;&lt;br/&gt;&quot;
+                    + &quot;The region should scroll to show a green region.&lt;br/&gt;&lt;br/&gt;&quot;
+                    + &quot;Next, perform a small scroll gesture that does&lt;br/&gt;not involve momentum. You should begin to&lt;br/&gt;see one of the colors &quot;
+                    + &quot;to the side of the current&lt;br/&gt;green box. When you release the wheel, the&lt;br/&gt;region should scroll back to a single color.&quot;;
+                messageLocationH.appendChild(message);
+
+                var messageLocationV = document.getElementById('itemV0');
+                var message = document.createElement('div');
+                message.innerHTML = &quot;&lt;p&gt;You should also be able to repeat these tests steps for this vertical region.&lt;br/&gt;&quot;
+                messageLocationV.appendChild(message);
+            }
+        }
+        &lt;/script&gt;
+    &lt;/head&gt;
+    &lt;body onload=&quot;onLoad();&quot;&gt;
+        &lt;div style=&quot;position: relative; width: 300px&quot;&gt;
+            &lt;div&gt;Tests that the scroll-snap feature works properly in overflow regions.&lt;/div&gt;
+            &lt;div class=&quot;horizontalGallery&quot; id=&quot;horizontalTarget&quot;&gt;
+                &lt;div class=&quot;horizontalGalleryDrawer&quot;&gt;
+                    &lt;div id=&quot;itemH0&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                    &lt;div id=&quot;itemH1&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                    &lt;div id=&quot;itemH2&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                    &lt;div id=&quot;itemH3&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                    &lt;div id=&quot;itemH4&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                    &lt;div id=&quot;itemH5&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                &lt;/div&gt;
+            &lt;/div&gt;
+            &lt;div class=&quot;verticalGallery&quot; id=&quot;verticalTarget&quot;&gt;
+                &lt;div class=&quot;verticalGalleryDrawer&quot;&gt;
+                    &lt;div id=&quot;itemV0&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                    &lt;div id=&quot;itemV1&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                    &lt;div id=&quot;itemV2&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                    &lt;div id=&quot;itemV3&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                    &lt;div id=&quot;itemV4&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                    &lt;div id=&quot;itemV5&quot; class=&quot;colorBox&quot;&gt;&lt;/div&gt;
+                &lt;/div&gt;
+            &lt;/div&gt;
+            &lt;div id=&quot;console&quot;&gt;&lt;/div&gt;
+        &lt;/div&gt;
+        &lt;script src=&quot;../../../../../resources/js-test-post.js&quot;&gt;&lt;/script&gt;
+    &lt;/body&gt;
+&lt;/html&gt;
</ins><span class="cx">\ No newline at end of file
</span></span></pre>
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