| Index: content/browser/frame_host/render_widget_host_view_child_frame.cc | 
| diff --git a/content/browser/frame_host/render_widget_host_view_child_frame.cc b/content/browser/frame_host/render_widget_host_view_child_frame.cc | 
| index ebbea17c2a927c70d7ad24f782b1946d61e31fdc..1fb9a83afcefc5957df23875d37d0c9420218964 100644 | 
| --- a/content/browser/frame_host/render_widget_host_view_child_frame.cc | 
| +++ b/content/browser/frame_host/render_widget_host_view_child_frame.cc | 
| @@ -225,6 +225,12 @@ bool RenderWidgetHostViewChildFrame::LockMouse() { | 
| void RenderWidgetHostViewChildFrame::UnlockMouse() { | 
| } | 
|  | 
| +uint32_t RenderWidgetHostViewChildFrame::GetSurfaceIdNamespace() { | 
| +  // TODO(kenrb): Create SurfaceFactory here when RWHVChildFrame | 
| +  // gets compositor surface support. | 
| +  return 0; | 
| +} | 
| + | 
| #if defined(OS_MACOSX) | 
| void RenderWidgetHostViewChildFrame::SetActive(bool active) { | 
| } | 
|  |