| Index: content/renderer/child_frame_compositing_helper.cc | 
| diff --git a/content/renderer/child_frame_compositing_helper.cc b/content/renderer/child_frame_compositing_helper.cc | 
| index f98433af463868b5fbfbcc4b1362b9d6428ea823..433d652175429289ea8c3b928d790aaf3c21f70e 100644 | 
| --- a/content/renderer/child_frame_compositing_helper.cc | 
| +++ b/content/renderer/child_frame_compositing_helper.cc | 
| @@ -279,6 +279,13 @@ void ChildFrameCompositingHelper::OnContainerDestroy() { | 
| web_layer_.reset(); | 
| } | 
|  | 
| +void ChildFrameCompositingHelper::ChildFrameGone() { | 
| +  background_layer_->SetBackgroundColor(SkColorSetARGBInline(255, 0, 128, 0)); | 
| +  background_layer_->RemoveAllChildren(); | 
| +  background_layer_->SetIsDrawable(true); | 
| +  background_layer_->SetContentsOpaque(true); | 
| +} | 
| + | 
| void ChildFrameCompositingHelper::OnBuffersSwappedPrivate( | 
| const SwapBuffersInfo& mailbox, | 
| unsigned sync_point, | 
|  |