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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/173718">173718</a></dd>
<dt>Author</dt> <dd>bshafiei@apple.com</dd>
<dt>Date</dt> <dd>2014-09-17 23:54:32 -0700 (Wed, 17 Sep 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>Merged <a href="http://trac.webkit.org/projects/webkit/changeset/173702">r173702</a>. &lt;rdar://problem/18316542&gt;</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari6001411branchSourceWebKit2ChangeLog">branches/safari-600.1.4.11-branch/Source/WebKit2/ChangeLog</a></li>
<li><a href="#branchessafari6001411branchSourceWebKit2SharedmacRemoteLayerTreeTransactionh">branches/safari-600.1.4.11-branch/Source/WebKit2/Shared/mac/RemoteLayerTreeTransaction.h</a></li>
<li><a href="#branchessafari6001411branchSourceWebKit2SharedmacRemoteLayerTreeTransactionmm">branches/safari-600.1.4.11-branch/Source/WebKit2/Shared/mac/RemoteLayerTreeTransaction.mm</a></li>
<li><a href="#branchessafari6001411branchSourceWebKit2UIProcessiosRemoteLayerTreeHostIOSmm">branches/safari-600.1.4.11-branch/Source/WebKit2/UIProcess/ios/RemoteLayerTreeHostIOS.mm</a></li>
<li><a href="#branchessafari6001411branchSourceWebKit2UIProcessiosWebVideoFullscreenManagerProxyh">branches/safari-600.1.4.11-branch/Source/WebKit2/UIProcess/ios/WebVideoFullscreenManagerProxy.h</a></li>
<li><a href="#branchessafari6001411branchSourceWebKit2UIProcessiosWebVideoFullscreenManagerProxymessagesin">branches/safari-600.1.4.11-branch/Source/WebKit2/UIProcess/ios/WebVideoFullscreenManagerProxy.messages.in</a></li>
<li><a href="#branchessafari6001411branchSourceWebKit2UIProcessiosWebVideoFullscreenManagerProxymm">branches/safari-600.1.4.11-branch/Source/WebKit2/UIProcess/ios/WebVideoFullscreenManagerProxy.mm</a></li>
<li><a href="#branchessafari6001411branchSourceWebKit2WebProcessWebPagemacPlatformCALayerRemoteCustommm">branches/safari-600.1.4.11-branch/Source/WebKit2/WebProcess/WebPage/mac/PlatformCALayerRemoteCustom.mm</a></li>
<li><a href="#branchessafari6001411branchSourceWebKit2WebProcessWebPagemacRemoteLayerTreeContexth">branches/safari-600.1.4.11-branch/Source/WebKit2/WebProcess/WebPage/mac/RemoteLayerTreeContext.h</a></li>
<li><a href="#branchessafari6001411branchSourceWebKit2WebProcessWebPagemacRemoteLayerTreeContextmm">branches/safari-600.1.4.11-branch/Source/WebKit2/WebProcess/WebPage/mac/RemoteLayerTreeContext.mm</a></li>
<li><a href="#branchessafari6001411branchSourceWebKit2WebProcessiosWebVideoFullscreenManagermm">branches/safari-600.1.4.11-branch/Source/WebKit2/WebProcess/ios/WebVideoFullscreenManager.mm</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari6001411branchSourceWebKit2ChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-600.1.4.11-branch/Source/WebKit2/ChangeLog (173717 => 173718)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.1.4.11-branch/Source/WebKit2/ChangeLog        2014-09-18 06:23:03 UTC (rev 173717)
+++ branches/safari-600.1.4.11-branch/Source/WebKit2/ChangeLog        2014-09-18 06:54:32 UTC (rev 173718)
</span><span class="lines">@@ -1,3 +1,51 @@
</span><ins>+2014-09-17  Babak Shafiei  &lt;bshafiei@apple.com&gt;
+
+        Merge r173702.
+
+    2014-09-17  Simon Fraser  &lt;simon.fraser@apple.com&gt;
+
+            Fix an issue that caused video playback to not always use high resolution streams
+            https://bugs.webkit.org/show_bug.cgi?id=136879
+            rdar://problem/18316542
+
+            Reviewed by Eric Carlson.
+        
+            The underlying video framework expects to be able to use -[CALayer convertRect:toLayer:nil] on
+            the video layer to obtain information about the display resolution of the video,
+            including the device scale factor. This doesn't work for layers in the web process,
+            which are remotely hosted into the UI process.
+        
+            For now, use a workaround which involves putting a scale transform equivalent to
+            the device scale factor on the web process layer, and the inverse scale on the 
+            hosting layer in the UI process.
+        
+            We have to do this in two places, for in-page video, and for fullscreen video.
+
+            * Shared/mac/RemoteLayerTreeTransaction.h: Add hostingDeviceScaleFactor to the LayerCreation
+            properties.
+            * Shared/mac/RemoteLayerTreeTransaction.mm:
+            (WebKit::RemoteLayerTreeTransaction::LayerCreationProperties::LayerCreationProperties):
+            (WebKit::RemoteLayerTreeTransaction::LayerCreationProperties::encode):
+            (WebKit::RemoteLayerTreeTransaction::LayerCreationProperties::decode):
+            * UIProcess/ios/RemoteLayerTreeHostIOS.mm:
+            (-[WKRemoteView initWithFrame:contextID:hostingDeviceScaleFactor:]): Set the inverse scale
+            transform on the layer.
+            (WebKit::RemoteLayerTreeHost::createLayer):
+            (-[WKRemoteView initWithFrame:contextID:]): Deleted.
+            * UIProcess/ios/WebVideoFullscreenManagerProxy.h:
+            * UIProcess/ios/WebVideoFullscreenManagerProxy.messages.in:
+            * UIProcess/ios/WebVideoFullscreenManagerProxy.mm:
+            (WebKit::WebVideoFullscreenManagerProxy::setupFullscreenWithID):
+            * WebProcess/WebPage/mac/PlatformCALayerRemoteCustom.mm:
+            (WebKit::PlatformCALayerRemoteCustom::PlatformCALayerRemoteCustom):
+            * WebProcess/WebPage/mac/RemoteLayerTreeContext.h:
+            (WebKit::RemoteLayerTreeContext::deviceScaleFactor):
+            * WebProcess/WebPage/mac/RemoteLayerTreeContext.mm:
+            (WebKit::RemoteLayerTreeContext::layerWasCreated):
+            * WebProcess/ios/WebVideoFullscreenManager.mm:
+            (WebKit::WebVideoFullscreenManager::enterFullscreenForNode):
+            (WebKit::WebVideoFullscreenManager::didSetupFullscreen):
+
</ins><span class="cx"> 2014-09-15  Babak Shafiei  &lt;bshafiei@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Merge r173623.
</span></span></pre></div>
<a id="branchessafari6001411branchSourceWebKit2SharedmacRemoteLayerTreeTransactionh"></a>
<div class="modfile"><h4>Modified: branches/safari-600.1.4.11-branch/Source/WebKit2/Shared/mac/RemoteLayerTreeTransaction.h (173717 => 173718)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.1.4.11-branch/Source/WebKit2/Shared/mac/RemoteLayerTreeTransaction.h        2014-09-18 06:23:03 UTC (rev 173717)
+++ branches/safari-600.1.4.11-branch/Source/WebKit2/Shared/mac/RemoteLayerTreeTransaction.h        2014-09-18 06:54:32 UTC (rev 173718)
</span><span class="lines">@@ -95,6 +95,7 @@
</span><span class="cx">         WebCore::PlatformCALayer::LayerType type;
</span><span class="cx"> 
</span><span class="cx">         uint32_t hostingContextID;
</span><ins>+        float hostingDeviceScaleFactor;
</ins><span class="cx">     };
</span><span class="cx"> 
</span><span class="cx">     struct LayerProperties {
</span></span></pre></div>
<a id="branchessafari6001411branchSourceWebKit2SharedmacRemoteLayerTreeTransactionmm"></a>
<div class="modfile"><h4>Modified: branches/safari-600.1.4.11-branch/Source/WebKit2/Shared/mac/RemoteLayerTreeTransaction.mm (173717 => 173718)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.1.4.11-branch/Source/WebKit2/Shared/mac/RemoteLayerTreeTransaction.mm        2014-09-18 06:23:03 UTC (rev 173717)
+++ branches/safari-600.1.4.11-branch/Source/WebKit2/Shared/mac/RemoteLayerTreeTransaction.mm        2014-09-18 06:54:32 UTC (rev 173718)
</span><span class="lines">@@ -47,6 +47,7 @@
</span><span class="cx">     : layerID(0)
</span><span class="cx">     , type(PlatformCALayer::LayerTypeLayer)
</span><span class="cx">     , hostingContextID(0)
</span><ins>+    , hostingDeviceScaleFactor(1)
</ins><span class="cx"> {
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -55,6 +56,7 @@
</span><span class="cx">     encoder &lt;&lt; layerID;
</span><span class="cx">     encoder.encodeEnum(type);
</span><span class="cx">     encoder &lt;&lt; hostingContextID;
</span><ins>+    encoder &lt;&lt; hostingDeviceScaleFactor;
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> bool RemoteLayerTreeTransaction::LayerCreationProperties::decode(IPC::ArgumentDecoder&amp; decoder, LayerCreationProperties&amp; result)
</span><span class="lines">@@ -68,6 +70,9 @@
</span><span class="cx">     if (!decoder.decode(result.hostingContextID))
</span><span class="cx">         return false;
</span><span class="cx"> 
</span><ins>+    if (!decoder.decode(result.hostingDeviceScaleFactor))
+        return false;
+
</ins><span class="cx">     return true;
</span><span class="cx"> }
</span><span class="cx"> 
</span></span></pre></div>
<a id="branchessafari6001411branchSourceWebKit2UIProcessiosRemoteLayerTreeHostIOSmm"></a>
<div class="modfile"><h4>Modified: branches/safari-600.1.4.11-branch/Source/WebKit2/UIProcess/ios/RemoteLayerTreeHostIOS.mm (173717 => 173718)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.1.4.11-branch/Source/WebKit2/UIProcess/ios/RemoteLayerTreeHostIOS.mm        2014-09-18 06:23:03 UTC (rev 173717)
+++ branches/safari-600.1.4.11-branch/Source/WebKit2/UIProcess/ios/RemoteLayerTreeHostIOS.mm        2014-09-18 06:54:32 UTC (rev 173718)
</span><span class="lines">@@ -108,10 +108,13 @@
</span><span class="cx"> @end
</span><span class="cx"> 
</span><span class="cx"> @implementation WKRemoteView
</span><del>-- (instancetype)initWithFrame:(CGRect)frame contextID:(uint32_t)contextID
</del><ins>+- (instancetype)initWithFrame:(CGRect)frame contextID:(uint32_t)contextID hostingDeviceScaleFactor:(float)scaleFactor
</ins><span class="cx"> {
</span><span class="cx">     if ((self = [super initWithFrame:frame])) {
</span><span class="cx">         [[self layer] setContextId:contextID];
</span><ins>+        // Invert the scale transform added in the WebProcess to fix &lt;rdar://problem/18316542&gt;.
+        float inverseScale = 1 / scaleFactor;
+        [[self layer] setTransform:CATransform3DMakeScale(inverseScale, inverseScale, 1)];
</ins><span class="cx">     }
</span><span class="cx">     
</span><span class="cx">     return self;
</span><span class="lines">@@ -155,7 +158,7 @@
</span><span class="cx">     case PlatformCALayer::LayerTypeAVPlayerLayer:
</span><span class="cx">     case PlatformCALayer::LayerTypeWebGLLayer:
</span><span class="cx">         if (!m_isDebugLayerTreeHost)
</span><del>-            view = adoptNS([[WKRemoteView alloc] initWithFrame:CGRectZero contextID:properties.hostingContextID]);
</del><ins>+            view = adoptNS([[WKRemoteView alloc] initWithFrame:CGRectZero contextID:properties.hostingContextID hostingDeviceScaleFactor:properties.hostingDeviceScaleFactor]);
</ins><span class="cx">         else
</span><span class="cx">             view = adoptNS([[WKCompositingView alloc] init]);
</span><span class="cx">         break;
</span></span></pre></div>
<a id="branchessafari6001411branchSourceWebKit2UIProcessiosWebVideoFullscreenManagerProxyh"></a>
<div class="modfile"><h4>Modified: branches/safari-600.1.4.11-branch/Source/WebKit2/UIProcess/ios/WebVideoFullscreenManagerProxy.h (173717 => 173718)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.1.4.11-branch/Source/WebKit2/UIProcess/ios/WebVideoFullscreenManagerProxy.h        2014-09-18 06:23:03 UTC (rev 173717)
+++ branches/safari-600.1.4.11-branch/Source/WebKit2/UIProcess/ios/WebVideoFullscreenManagerProxy.h        2014-09-18 06:54:32 UTC (rev 173718)
</span><span class="lines">@@ -55,7 +55,7 @@
</span><span class="cx">     virtual void didReceiveMessage(IPC::Connection*, IPC::MessageDecoder&amp;) override;
</span><span class="cx"> 
</span><span class="cx">     // Translate to FullscreenInterface
</span><del>-    void setupFullscreenWithID(uint32_t, WebCore::IntRect initialRect);
</del><ins>+    void setupFullscreenWithID(uint32_t, WebCore::IntRect initialRect, float hostingDeviceScaleFactor);
</ins><span class="cx">     void setSeekableRangesVector(Vector&lt;std::pair&lt;double, double&gt;&gt;&amp;);
</span><span class="cx">     void setExternalPlaybackProperties(bool enabled, uint32_t targetType, String localizedDeviceName);
</span><span class="cx">     
</span></span></pre></div>
<a id="branchessafari6001411branchSourceWebKit2UIProcessiosWebVideoFullscreenManagerProxymessagesin"></a>
<div class="modfile"><h4>Modified: branches/safari-600.1.4.11-branch/Source/WebKit2/UIProcess/ios/WebVideoFullscreenManagerProxy.messages.in (173717 => 173718)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.1.4.11-branch/Source/WebKit2/UIProcess/ios/WebVideoFullscreenManagerProxy.messages.in        2014-09-18 06:23:03 UTC (rev 173717)
+++ branches/safari-600.1.4.11-branch/Source/WebKit2/UIProcess/ios/WebVideoFullscreenManagerProxy.messages.in        2014-09-18 06:54:32 UTC (rev 173718)
</span><span class="lines">@@ -31,7 +31,7 @@
</span><span class="cx">     SetExternalPlaybackProperties(bool enabled, uint32_t targetType, String localizedDeviceName);
</span><span class="cx">     SetDuration(double duration)
</span><span class="cx">     SetRate(bool isPlaying, double rate)
</span><del>-    SetupFullscreenWithID(uint32_t videoLayerID, WebCore::IntRect initialRect)
</del><ins>+    SetupFullscreenWithID(uint32_t videoLayerID, WebCore::IntRect initialRect, float hostingScaleFactor)
</ins><span class="cx">     EnterFullscreen()
</span><span class="cx">     ExitFullscreen(WebCore::IntRect finalRect)
</span><span class="cx">     CleanupFullscreen()
</span></span></pre></div>
<a id="branchessafari6001411branchSourceWebKit2UIProcessiosWebVideoFullscreenManagerProxymm"></a>
<div class="modfile"><h4>Modified: branches/safari-600.1.4.11-branch/Source/WebKit2/UIProcess/ios/WebVideoFullscreenManagerProxy.mm (173717 => 173718)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.1.4.11-branch/Source/WebKit2/UIProcess/ios/WebVideoFullscreenManagerProxy.mm        2014-09-18 06:23:03 UTC (rev 173717)
+++ branches/safari-600.1.4.11-branch/Source/WebKit2/UIProcess/ios/WebVideoFullscreenManagerProxy.mm        2014-09-18 06:54:32 UTC (rev 173718)
</span><span class="lines">@@ -72,10 +72,16 @@
</span><span class="cx">     m_layerHost.clear();
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-void WebVideoFullscreenManagerProxy::setupFullscreenWithID(uint32_t videoLayerID, WebCore::IntRect initialRect)
</del><ins>+void WebVideoFullscreenManagerProxy::setupFullscreenWithID(uint32_t videoLayerID, WebCore::IntRect initialRect, float hostingDeviceScaleFactor)
</ins><span class="cx"> {
</span><span class="cx">     ASSERT(videoLayerID);
</span><span class="cx">     m_layerHost = WKMakeRenderLayer(videoLayerID);
</span><ins>+    if (hostingDeviceScaleFactor != 1) {
+        // Invert the scale transform added in the WebProcess to fix &lt;rdar://problem/18316542&gt;.
+        float inverseScale = 1 / hostingDeviceScaleFactor;
+        [m_layerHost setTransform:CATransform3DMakeScale(inverseScale, inverseScale, 1)];
+    }
+
</ins><span class="cx">     UIView *parentView = toRemoteLayerTreeDrawingAreaProxy(m_page-&gt;drawingArea())-&gt;remoteLayerTreeHost().rootLayer();
</span><span class="cx">     setupFullscreen(*m_layerHost.get(), initialRect, parentView);
</span><span class="cx"> }
</span></span></pre></div>
<a id="branchessafari6001411branchSourceWebKit2WebProcessWebPagemacPlatformCALayerRemoteCustommm"></a>
<div class="modfile"><h4>Modified: branches/safari-600.1.4.11-branch/Source/WebKit2/WebProcess/WebPage/mac/PlatformCALayerRemoteCustom.mm (173717 => 173718)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.1.4.11-branch/Source/WebKit2/WebProcess/WebPage/mac/PlatformCALayerRemoteCustom.mm        2014-09-18 06:23:03 UTC (rev 173717)
+++ branches/safari-600.1.4.11-branch/Source/WebKit2/WebProcess/WebPage/mac/PlatformCALayerRemoteCustom.mm        2014-09-18 06:54:32 UTC (rev 173718)
</span><span class="lines">@@ -64,6 +64,12 @@
</span><span class="cx"> #if HAVE(OUT_OF_PROCESS_LAYER_HOSTING)
</span><span class="cx">     case LayerHostingMode::OutOfProcess:
</span><span class="cx">         m_layerHostingContext = LayerHostingContext::createForExternalHostingProcess();
</span><ins>+#if PLATFORM(IOS)
+        float scaleFactor = context.deviceScaleFactor();
+        // Set a scale factor here to make convertRect:toLayer:nil take scale factor into account. &lt;rdar://problem/18316542&gt;.
+        // This scale factor is inverted in the hosting process.
+        [customLayer setTransform:CATransform3DMakeScale(scaleFactor, scaleFactor, 1)];
+#endif
</ins><span class="cx">         break;
</span><span class="cx"> #endif
</span><span class="cx">     }
</span></span></pre></div>
<a id="branchessafari6001411branchSourceWebKit2WebProcessWebPagemacRemoteLayerTreeContexth"></a>
<div class="modfile"><h4>Modified: branches/safari-600.1.4.11-branch/Source/WebKit2/WebProcess/WebPage/mac/RemoteLayerTreeContext.h (173717 => 173718)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.1.4.11-branch/Source/WebKit2/WebProcess/WebPage/mac/RemoteLayerTreeContext.h        2014-09-18 06:23:03 UTC (rev 173717)
+++ branches/safari-600.1.4.11-branch/Source/WebKit2/WebProcess/WebPage/mac/RemoteLayerTreeContext.h        2014-09-18 06:54:32 UTC (rev 173718)
</span><span class="lines">@@ -55,6 +55,8 @@
</span><span class="cx"> 
</span><span class="cx">     WebCore::LayerPool&amp; layerPool() { return m_layerPool; }
</span><span class="cx"> 
</span><ins>+    float deviceScaleFactor() const { return m_webPage.deviceScaleFactor(); }
+
</ins><span class="cx">     LayerHostingMode layerHostingMode() const { return m_webPage.layerHostingMode(); }
</span><span class="cx"> 
</span><span class="cx">     void buildTransaction(RemoteLayerTreeTransaction&amp;, WebCore::PlatformCALayer&amp; rootLayer);
</span></span></pre></div>
<a id="branchessafari6001411branchSourceWebKit2WebProcessWebPagemacRemoteLayerTreeContextmm"></a>
<div class="modfile"><h4>Modified: branches/safari-600.1.4.11-branch/Source/WebKit2/WebProcess/WebPage/mac/RemoteLayerTreeContext.mm (173717 => 173718)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.1.4.11-branch/Source/WebKit2/WebProcess/WebPage/mac/RemoteLayerTreeContext.mm        2014-09-18 06:23:03 UTC (rev 173717)
+++ branches/safari-600.1.4.11-branch/Source/WebKit2/WebProcess/WebPage/mac/RemoteLayerTreeContext.mm        2014-09-18 06:54:32 UTC (rev 173718)
</span><span class="lines">@@ -61,8 +61,10 @@
</span><span class="cx">     creationProperties.layerID = layerID;
</span><span class="cx">     creationProperties.type = type;
</span><span class="cx"> 
</span><del>-    if (layer.isPlatformCALayerRemoteCustom())
</del><ins>+    if (layer.isPlatformCALayerRemoteCustom()) {
</ins><span class="cx">         creationProperties.hostingContextID = layer.hostingContextID();
</span><ins>+        creationProperties.hostingDeviceScaleFactor = deviceScaleFactor();
+    }
</ins><span class="cx"> 
</span><span class="cx">     m_createdLayers.append(creationProperties);
</span><span class="cx">     m_liveLayers.add(layerID, &amp;layer);
</span></span></pre></div>
<a id="branchessafari6001411branchSourceWebKit2WebProcessiosWebVideoFullscreenManagermm"></a>
<div class="modfile"><h4>Modified: branches/safari-600.1.4.11-branch/Source/WebKit2/WebProcess/ios/WebVideoFullscreenManager.mm (173717 => 173718)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-600.1.4.11-branch/Source/WebKit2/WebProcess/ios/WebVideoFullscreenManager.mm        2014-09-18 06:23:03 UTC (rev 173717)
+++ branches/safari-600.1.4.11-branch/Source/WebKit2/WebProcess/ios/WebVideoFullscreenManager.mm        2014-09-18 06:54:32 UTC (rev 173718)
</span><span class="lines">@@ -97,7 +97,7 @@
</span><span class="cx"> 
</span><span class="cx">     m_layerHostingContext = LayerHostingContext::createForExternalHostingProcess();
</span><span class="cx">     
</span><del>-    m_page-&gt;send(Messages::WebVideoFullscreenManagerProxy::SetupFullscreenWithID(m_layerHostingContext-&gt;contextID(), clientRectForNode(node)), m_page-&gt;pageID());
</del><ins>+    m_page-&gt;send(Messages::WebVideoFullscreenManagerProxy::SetupFullscreenWithID(m_layerHostingContext-&gt;contextID(), clientRectForNode(node), m_page-&gt;deviceScaleFactor()), m_page-&gt;pageID());
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void WebVideoFullscreenManager::exitFullscreenForNode(Node* node)
</span><span class="lines">@@ -175,10 +175,18 @@
</span><span class="cx"> 
</span><span class="cx">     [CATransaction begin];
</span><span class="cx">     [CATransaction setDisableActions:YES];
</span><ins>+
</ins><span class="cx">     [videoLayer setBackgroundColor:cachedCGColor(WebCore::Color::transparent, WebCore::ColorSpaceDeviceRGB)];
</span><ins>+
+    // Set a scale factor here to make convertRect:toLayer:nil take scale factor into account. &lt;rdar://problem/18316542&gt;.
+    // This scale factor is inverted in the hosting process.
+    float hostingScaleFactor = m_page-&gt;deviceScaleFactor();
+    [videoLayer setTransform:CATransform3DMakeScale(hostingScaleFactor, hostingScaleFactor, 1)];
</ins><span class="cx">     m_layerHostingContext-&gt;setRootLayer(videoLayer);
</span><ins>+
</ins><span class="cx">     setVideoFullscreenLayer(videoLayer);
</span><span class="cx">     [CATransaction commit];
</span><ins>+
</ins><span class="cx">     m_page-&gt;send(Messages::WebVideoFullscreenManagerProxy::EnterFullscreen(), m_page-&gt;pageID());
</span><span class="cx"> }
</span><span class="cx">     
</span></span></pre>
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