Decoupling backbuffer allocation suggestion from frontbuffer allocation suggestion.

content/common/gpu/texture_image_transport_surface.h

Index: content/common/gpu/texture_image_transport_surface.h
diff --git a/content/common/gpu/texture_image_transport_surface.h b/content/common/gpu/texture_image_transport_surface.h
index 913854cb6f6d1fc9a40f0424335c3c1d7513a5e3..394da7515f64440971d8a4d61babae5b5ca5d293 100644
--- a/content/common/gpu/texture_image_transport_surface.h
+++ b/content/common/gpu/texture_image_transport_surface.h
@@ -35,7 +35,8 @@ class TextureImageTransportSurface :
   virtual unsigned int GetBackingFrameBufferObject() OVERRIDE;
   virtual bool PostSubBuffer(int x, int y, int width, int height) OVERRIDE;
   virtual bool OnMakeCurrent(gfx::GLContext* context) OVERRIDE;
-  virtual void SetBufferAllocation(BufferAllocationState state) OVERRIDE;
+  virtual void SetBackbufferAllocation(bool allocated) OVERRIDE;
+  virtual void SetFrontbufferAllocation(bool allocated) OVERRIDE;
   virtual void* GetShareHandle() OVERRIDE;
   virtual void* GetDisplay() OVERRIDE;
   virtual void* GetConfig() OVERRIDE;
@@ -93,6 +94,9 @@ class TextureImageTransportSurface :
   // Whether or not the command buffer stub has been destroyed.
   bool stub_destroyed_;
 
+  bool backbuffer_suggested_allocation_;
+  bool frontbuffer_suggested_allocation_;
+
   scoped_ptr<ImageTransportHelper> helper_;
   GpuCommandBufferStub* parent_stub_;