Avoid unnecessary LocalSurfaceId allocation in RenderWidgetHostViewChildFrame/Guest

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 fea13850ab586babd0e47695985cd93f34ecf83a..e5c20e65a228cb1c249de1e4b173f94afb092a23 100644
--- a/content/browser/frame_host/render_widget_host_view_guest.h
+++ b/content/browser/frame_host/render_widget_host_view_guest.h
@@ -125,12 +125,9 @@ class CONTENT_EXPORT RenderWidgetHostViewGuest
   bool IsRenderWidgetHostViewGuest() override;
   RenderWidgetHostViewBase* GetOwnerRenderWidgetHostView() const;
 
- protected:
+ private:
   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;
@@ -154,6 +151,8 @@ class CONTENT_EXPORT RenderWidgetHostViewGuest
                           int browser_plugin_instance_id,
                           const blink::WebInputEvent* event);
 
+  bool HasEmbedderChanged() override;
+
   // BrowserPluginGuest and RenderWidgetHostViewGuest's lifetimes are not tied
   // to one another, therefore we access |guest_| through WeakPtr.
   base::WeakPtr<BrowserPluginGuest> guest_;