| Index: content/renderer/gpu/render_widget_compositor.cc | 
| diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc | 
| index f3f6489daee1f0e3dec61487b979322f8e8fe52d..32600d5c600befe41e649906a2f46944889ac847 100644 | 
| --- a/content/renderer/gpu/render_widget_compositor.cc | 
| +++ b/content/renderer/gpu/render_widget_compositor.cc | 
| @@ -942,4 +942,9 @@ void RenderWidgetCompositor::RateLimitSharedMainThreadContext() { | 
| provider->ContextGL()->RateLimitOffscreenContextCHROMIUM(); | 
| } | 
|  | 
| +void RenderWidgetCompositor::SetSurfaceIdNamespace( | 
| +    uint32_t surface_id_namespace) { | 
| +  layer_tree_host_->set_surface_id_namespace(surface_id_namespace); | 
| +} | 
| + | 
| }  // namespace content | 
|  |