Fix an issue that subtitle is not shown for native fullscreen video that is inside an iframe

Source/core/rendering/compositing/GraphicsLayerUpdater.cpp

Index: Source/core/rendering/compositing/GraphicsLayerUpdater.cpp
diff --git a/Source/core/rendering/compositing/GraphicsLayerUpdater.cpp b/Source/core/rendering/compositing/GraphicsLayerUpdater.cpp
index 40c419947199076cd33c2a73106ab36d3df34799..882b60974288f3eae94be1fd35a6cce65520bd3b 100644
--- a/Source/core/rendering/compositing/GraphicsLayerUpdater.cpp
+++ b/Source/core/rendering/compositing/GraphicsLayerUpdater.cpp
@@ -27,6 +27,7 @@
 #include "config.h"
 #include "core/rendering/compositing/GraphicsLayerUpdater.h"
 
+#include "core/html/HTMLMediaElement.h"
 #include "core/rendering/RenderLayer.h"
 #include "core/rendering/RenderLayerReflectionInfo.h"
 #include "core/rendering/RenderPart.h"
@@ -123,6 +124,16 @@ void GraphicsLayerUpdater::rebuildTree(RenderLayer& layer, Vector<GraphicsLayer*
         }
 
         childLayersOfEnclosingLayer.append(currentCompositedLayerMapping->childForSuperlayers());
+        bool appendLayer = true;
+        if (RuntimeEnabledFeatures::overlayFullscreenVideoEnabled()) {
+            Node* node = layer.renderer()->node();
+            if (isHTMLMediaElement(*node) && toHTMLMediaElement(node)->isFullscreen()) {
+                appendLayer = false;
+            }
+        }
+        if (appendLayer) {

[esprehn, 2014/03/05 00:22:41]

This should be refactored into a function.

if (shouldAppendLayer(...))
 
childLayersOfEnclosingLayer.append(currentCompositedLayerMapping->childForSuperlayers());

[qinmin, 2014/03/05 01:34:42]

Done.

+            childLayersOfEnclosingLayer.append(currentCompositedLayerMapping->childForSuperlayers());
+        }
     }
 
     if (!depth) {