Compositor leaks all resources if tab is closed and it's not the last in the process

Source/WebCore/platform/graphics/chromium/LayerRendererChromium.h

Index: Source/WebCore/platform/graphics/chromium/LayerRendererChromium.h
===================================================================
--- Source/WebCore/platform/graphics/chromium/LayerRendererChromium.h	(revision 93831)
+++ Source/WebCore/platform/graphics/chromium/LayerRendererChromium.h	(working copy)
@@ -168,6 +168,7 @@
 protected:
     virtual PassOwnPtr<CCLayerTreeHostImplProxy> createLayerTreeHostImplProxy();
 
+    void clearRootCCLayerImpl();
 private:
     typedef Vector<RefPtr<CCLayerImpl> > LayerList;
     typedef HashMap<GraphicsContext3D*, int> ChildContextMap;
@@ -207,6 +208,8 @@
     bool initializeSharedObjects();
     void cleanupSharedObjects();
 
+    void clearRenderSurfacesOnCCLayerImplRecursive(CCLayerImpl*);
+
     void setLayerRendererRecursive(LayerChromium*);
 
     IntRect m_viewportVisibleRect;