Pass Surface ID namespace to renderer compositors.

content/browser/renderer_host/render_widget_host_view_aura.h

Index: content/browser/renderer_host/render_widget_host_view_aura.h
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.h b/content/browser/renderer_host/render_widget_host_view_aura.h
index 69fe661283393fdb0315cda39e74758e57cc291c..70b4bdcd42f4f358ded9c07095df68d68856c52a 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.h
+++ b/content/browser/renderer_host/render_widget_host_view_aura.h
@@ -224,6 +224,7 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
                              scoped_ptr<cc::CompositorFrame> frame) override;
   void DidStopFlinging() override;
   void OnDidNavigateMainFrameToNewPage() override;
+  uint32_t GetSurfaceIdNamespace() override;
 
 #if defined(OS_WIN)
   void SetParentNativeViewAccessible(
@@ -474,6 +475,8 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
   void DelegatedFrameHostUpdateVSyncParameters(
       const base::TimeTicks& timebase,
       const base::TimeDelta& interval) override;
+  void DelegatedFrameHostUpdateSurfaceIdNamespace(
+      uint32_t surface_id_namespace) override;
 
   // Detaches |this| from the input method object.
   void DetachFromInputMethod();