Use shared D3D9 texture to transport the compositor's backing buffer to the browser...

ui/gfx/gl/gl_surface_osmesa.h

Index: ui/gfx/gl/gl_surface_osmesa.h
===================================================================
--- ui/gfx/gl/gl_surface_osmesa.h	(revision 106500)
+++ ui/gfx/gl/gl_surface_osmesa.h	(working copy)
@@ -22,7 +22,7 @@
 
   // Resize the back buffer, preserving the old content. Does nothing if the
   // size is unchanged.
-  void Resize(const gfx::Size& new_size);
+  virtual bool Resize(const gfx::Size& new_size);
 
   // Implement GLSurface.
   virtual bool Initialize();
@@ -31,10 +31,8 @@
   virtual bool SwapBuffers();
   virtual gfx::Size GetSize();
   virtual void* GetHandle();
+  virtual unsigned GetFormat();
 
-  // Get the surface's format.
-  unsigned GetFormat();
-
  private:
   void AllocateBuffer(const Size& size);