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

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

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 150 matching lines @@
     bool isCompositorContextLost();
 
     void releaseTextures();
 
 #ifndef NDEBUG
     static bool s_inPaintLayerContents;
 #endif
 protected:
     virtual PassOwnPtr<CCLayerTreeHostImplProxy> createLayerTreeHostImplProxy();
 
+    void clearRootCCLayerImpl();
 private:
     typedef Vector<RefPtr<CCLayerImpl> > LayerList;
     typedef HashMap<GraphicsContext3D*, int> ChildContextMap;
 
     // FIXME: This needs to be moved to the CCLayerTreeHostImpl when that class exists.
     RefPtr<CCLayerImpl> m_rootCCLayerImpl;
 
     LayerRendererChromium(CCLayerTreeHostClient*, PassRefPtr<GraphicsContext3D>, PassOwnPtr<LayerPainterChromium> contentPaint, bool accelerateDrawing);
 
     void updateLayers(LayerList& renderSurfaceLayerList);
@@ skipping 19 matching lines @@
 
     bool makeContextCurrent();
 
     static bool compareLayerZ(const RefPtr<CCLayerImpl>&, const RefPtr<CCLayerImpl>&);
 
     void dumpRenderSurfaces(TextStream&, int indent, LayerChromium*) const;
 
     bool initializeSharedObjects();
     void cleanupSharedObjects();
 
+    void clearRenderSurfacesOnCCLayerImplRecursive(CCLayerImpl*);
+
     void setLayerRendererRecursive(LayerChromium*);
 
     IntRect m_viewportVisibleRect;
     IntRect m_viewportContentRect;
     IntPoint m_viewportScrollPosition;
 
     TransformationMatrix m_projectionMatrix;
     TransformationMatrix m_windowMatrix;
 
     RefPtr<LayerChromium> m_rootLayer;
@@ skipping 63 matching lines @@
 #else
 #define GLC(context, x) (x)
 #endif
 
 
 }
 
 #endif // USE(ACCELERATED_COMPOSITING)
 
 #endif