| Index: content/browser/web_contents/web_contents_impl.cc | 
| diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc | 
| index 2b7899e8584ea7cea0781d4e4bfa8a397d579253..d48e4b6f9cc5e02da9eafd8f92f9eb3465f84d56 100644 | 
| --- a/content/browser/web_contents/web_contents_impl.cc | 
| +++ b/content/browser/web_contents/web_contents_impl.cc | 
| @@ -1277,6 +1277,10 @@ void WebContentsImpl::AttachToOuterWebContentsFrame( | 
|  | 
| GetRenderManager()->SetRWHViewForInnerContents( | 
| GetRenderManager()->GetRenderWidgetHostView()); | 
| + | 
| +  static_cast<RenderWidgetHostViewChildFrame*>( | 
| +      GetRenderManager()->GetRenderWidgetHostView()) | 
| +      ->RegisterSurfaceNamespaceId(); | 
| } | 
|  | 
| void WebContentsImpl::Stop() { | 
|  |