| 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 aafc668b25e46c846312f72497fa1081bc39b01d..bb09dc65e2cfc4d8cbaa72f59e68bdc71f597de1 100644 | 
| --- a/content/browser/web_contents/web_contents_impl.cc | 
| +++ b/content/browser/web_contents/web_contents_impl.cc | 
| @@ -1278,6 +1278,10 @@ void WebContentsImpl::AttachToOuterWebContentsFrame( | 
|  | 
| GetRenderManager()->SetRWHViewForInnerContents( | 
| GetRenderManager()->GetRenderWidgetHostView()); | 
| + | 
| +  static_cast<RenderWidgetHostViewChildFrame*>( | 
| +      GetRenderManager()->GetRenderWidgetHostView()) | 
| +      ->RegisterSurfaceNamespaceId(); | 
| } | 
|  | 
| void WebContentsImpl::Stop() { | 
|  |