Make <webview> use out-of-process iframe architecture.

extensions/renderer/guest_view/guest_view_container.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef EXTENSIONS_RENDERER_GUEST_VIEW_GUEST_VIEW_CONTAINER_H_
 #define EXTENSIONS_RENDERER_GUEST_VIEW_GUEST_VIEW_CONTAINER_H_
 
 #include "base/memory/linked_ptr.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/renderer/browser_plugin_delegate.h"
@@ skipping 21 matching lines @@
   // Called when the embedding RenderFrame is destroyed.
   virtual void OnRenderFrameDestroyed() {}
 
   // Called to respond to IPCs from the browser process that have not been
   // handled by GuestViewContainer.
   virtual bool OnMessage(const IPC::Message& message);
 
   // Called to perform actions when a GuestViewContainer gets a geometry.
   virtual void OnReady() {}
 
+  // BrowserPluginGuestDelegate public implementation.
+  void SetElementInstanceID(int element_instance_id) final;
+
+ protected:
+  bool ready_;
+
+  void OnHandleCallback(const IPC::Message& message);
+
  private:
   class RenderFrameLifetimeObserver;
   friend class RenderFrameLifetimeObserver;
 
   void RenderFrameDestroyed();
 
   void EnqueueRequest(linked_ptr<GuestViewRequest> request);
   void PerformPendingRequest();
   void HandlePendingResponseCallback(const IPC::Message& message);
 
-  void OnHandleCallback(const IPC::Message& message);
-
   // BrowserPluginDelegate implementation.
   bool OnMessageReceived(const IPC::Message& message) final;
   void Ready() final;
-  void SetElementInstanceID(int element_instance_id) final;
 
   int element_instance_id_;
   content::RenderFrame* render_frame_;
   scoped_ptr<RenderFrameLifetimeObserver> render_frame_lifetime_observer_;
 
-  bool ready_;
-
   std::deque<linked_ptr<GuestViewRequest> > pending_requests_;
   linked_ptr<GuestViewRequest> pending_response_;
 
   DISALLOW_COPY_AND_ASSIGN(GuestViewContainer);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_GUEST_VIEW_GUEST_VIEW_CONTAINER_H_