Merge 92520 - [chromium] Accelerated canvas breaks when moving canvases or resources between Pages

Source/WebCore/page/Page.h

Index: Source/WebCore/page/Page.h
===================================================================
--- Source/WebCore/page/Page.h	(revision 93254)
+++ Source/WebCore/page/Page.h	(working copy)
@@ -81,7 +81,6 @@
     class VisibleSelection;
     class ScrollableArea;
     class Settings;
-    class GraphicsContext3D;
     class SpeechInput;
     class SpeechInputClient;
 #if ENABLE(DOM_STORAGE)
@@ -266,8 +265,6 @@
         static void allVisitedStateChanged(PageGroup*);
         static void visitedStateChanged(PageGroup*, LinkHash visitedHash);
 
-        GraphicsContext3D* sharedGraphicsContext3D();
-
 #if ENABLE(DOM_STORAGE)
         StorageNamespace* sessionStorage(bool optionalCreate = true);
         void setSessionStorage(PassRefPtr<StorageNamespace>);
@@ -324,10 +321,6 @@
         OwnPtr<Chrome> m_chrome;
         OwnPtr<DragCaretController> m_dragCaretController;
 
-#if ENABLE(ACCELERATED_2D_CANVAS)
-        RefPtr<GraphicsContext3D> m_sharedGraphicsContext3D;
-#endif
-        
 #if ENABLE(DRAG_SUPPORT)
         OwnPtr<DragController> m_dragController;
 #endif