| Index: cc/output/output_surface.h
 | 
| diff --git a/cc/output/output_surface.h b/cc/output/output_surface.h
 | 
| index f9ec618996692697dc9b556337f6dd222cffa068..95a52c1edd05ec325c41949eafc7b4e9fdb49673 100644
 | 
| --- a/cc/output/output_surface.h
 | 
| +++ b/cc/output/output_surface.h
 | 
| @@ -132,6 +132,9 @@ class CC_EXPORT OutputSurface : public base::trace_event::MemoryDumpProvider {
 | 
|    virtual void ForceReclaimResources() {}
 | 
|  
 | 
|    virtual void BindFramebuffer();
 | 
| +  // Gives the GL internal format that should be used for calling CopyTexImage2D
 | 
| +  // when the framebuffer is bound via BindFramebuffer().
 | 
| +  virtual uint32_t GetFramebufferCopyTextureFormat() = 0;
 | 
|  
 | 
|    // The implementation may destroy or steal the contents of the CompositorFrame
 | 
|    // passed in (though it will not take ownership of the CompositorFrame
 | 
| 
 |