| Index: content/renderer/child_frame_compositing_helper.h | 
| diff --git a/content/renderer/child_frame_compositing_helper.h b/content/renderer/child_frame_compositing_helper.h | 
| index f543932968052243ee07003e0744751bc6b1c1fb..4ca8a8759922b1e56dd7d94cb740b77d1e160e8d 100644 | 
| --- a/content/renderer/child_frame_compositing_helper.h | 
| +++ b/content/renderer/child_frame_compositing_helper.h | 
| @@ -80,6 +80,7 @@ class CONTENT_EXPORT ChildFrameCompositingHelper | 
| uint32 output_surface_id, | 
| int host_id); | 
| void UpdateVisibility(bool); | 
| +  void ChildFrameGone(); | 
|  | 
| // cc::DelegatedFrameProviderClient implementation. | 
| virtual void UnusedResourcesAreAvailable() OVERRIDE; | 
|  |