Added the infrastructure for surfaceProxy.onResize() and SurfaceView.onResize()

extensions/browser/guest_view/guest_view_base.h

Index: extensions/browser/guest_view/guest_view_base.h
diff --git a/extensions/browser/guest_view/guest_view_base.h b/extensions/browser/guest_view/guest_view_base.h
index b6984f824dfa2c72551c6b6905f716ede8d8e707..cc5d97df6439b1f33bd4065829e73ab25aea0223 100644
--- a/extensions/browser/guest_view/guest_view_base.h
+++ b/extensions/browser/guest_view/guest_view_base.h
@@ -272,8 +272,11 @@ class GuestViewBase : public content::BrowserPluginGuestDelegate,
   void OnZoomChanged(
       const ui_zoom::ZoomController::ZoomChangedEventData& data) override;
 
-  // Dispatches an event |event_name| to the embedder with the |event| fields.
-  void DispatchEventToEmbedder(Event* event);
+  // Dispatches an event to the guest proxy.
+  void DispatchEventToGuestProxy(Event* event);
+
+  // Dispatches an event to the view.
+  void DispatchEventToView(Event* event);
 
  protected:
   GuestViewBase(content::BrowserContext* browser_context,
@@ -287,12 +290,18 @@ class GuestViewBase : public content::BrowserPluginGuestDelegate,
 
   class OpenerLifetimeObserver;
 
+  void DispatchEvent(Event* event, int instance_id);
+
   void SendQueuedEvents();
 
   void CompleteInit(scoped_ptr<base::DictionaryValue> create_params,
                     const WebContentsCreatedCallback& callback,
                     content::WebContents* guest_web_contents);
 
+  // Dispatches the onResize event to the embedder.
+  void DispatchOnResizeEvent(const gfx::Size& old_size,
+                             const gfx::Size& new_size);
+
   void SetUpAutoSize(const base::DictionaryValue& params);
 
   void StartTrackingEmbedderZoomLevel();