Clean up RenderWidgetHostView(ChildFrame and Guest) compositing code

content/browser/frame_host/render_widget_host_view_guest.h

Index: content/browser/frame_host/render_widget_host_view_guest.h
diff --git a/content/browser/frame_host/render_widget_host_view_guest.h b/content/browser/frame_host/render_widget_host_view_guest.h
index f0b1f4de2a026a6cbc1eebd74ce8cc22cabcdc9e..fe0f7a1945ffd19d66db9c19c9a3faa61ee49836 100644
--- a/content/browser/frame_host/render_widget_host_view_guest.h
+++ b/content/browser/frame_host/render_widget_host_view_guest.h
@@ -130,8 +130,14 @@ class CONTENT_EXPORT RenderWidgetHostViewGuest
 
  protected:
   friend class RenderWidgetHostView;
+  bool ShouldCreateNewSurfaceId(uint32_t compositor_frame_sink_id,
+                                const cc::CompositorFrame& frame) override;
 
  private:
+  void SendSurfaceInfoToEmbedderImpl(
+      const cc::SurfaceInfo& surface_info,
+      const cc::SurfaceSequence& sequence) override;
+
   RenderWidgetHostViewGuest(
       RenderWidgetHost* widget,
       BrowserPluginGuest* guest,