Plumb CompositedDisplayList to WebViewImpl

Source/web/WebViewImpl.h

Index: Source/web/WebViewImpl.h
diff --git a/Source/web/WebViewImpl.h b/Source/web/WebViewImpl.h
index 85d2741d0bf2fb862c8b970e8c7b0404972180a0..e56de8ece9a0011c033e6f9a4b0be05404737838 100644
--- a/Source/web/WebViewImpl.h
+++ b/Source/web/WebViewImpl.h
@@ -35,8 +35,10 @@
 #include "core/page/EventWithHitTestResults.h"
 #include "platform/geometry/IntPoint.h"
 #include "platform/geometry/IntRect.h"
+#include "platform/graphics/CompositedDisplayList.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/heap/Handle.h"
+#include "public/platform/WebCompositedDisplayList.h"
 #include "public/platform/WebCompositorAnimationTimeline.h"
 #include "public/platform/WebDisplayMode.h"
 #include "public/platform/WebFloatSize.h"
@@ -271,6 +273,9 @@ public:
     void setShowScrollBottleneckRects(bool) override;
     void acceptLanguagesChanged() override;
 
+    void setCompositedDisplayList(PassOwnPtr<CompositedDisplayList>);
+    WebCompositedDisplayList* compositedDisplayList() override;
+
     // WebViewImpl
     void enableViewport();
     void disableViewport();
@@ -740,6 +745,8 @@ private:
     bool m_recreatingGraphicsContext;
     static const WebInputEvent* m_currentInputEvent;
 
+    WebCompositedDisplayList m_compositedDisplayList;
+
     MediaKeysClientImpl m_mediaKeysClientImpl;
     OwnPtr<WebActiveGestureAnimation> m_gestureAnimation;
     WebPoint m_positionOnFlingStart;