Enable swapping a frame back in to its parent process

content/renderer/render_frame_proxy.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 CONTENT_RENDERER_RENDER_FRAME_PROXY_H_
 #define CONTENT_RENDERER_RENDER_FRAME_PROXY_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
@@ skipping 100 matching lines @@
   void Init(blink::WebRemoteFrame* frame, RenderViewImpl* render_view);
 
   // IPC::Listener
   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
 
   // IPC handlers
   void OnDeleteProxy();
   void OnChildFrameProcessGone();
   void OnCompositorFrameSwapped(const IPC::Message& message);
   void OnDisownOpener();
+  void OnSwapOut(int frame_routing_id);
 
   // The routing ID by which this RenderFrameProxy is known.
   const int routing_id_;
 
   // The routing ID of the local RenderFrame (if any) which this
   // RenderFrameProxy is meant to replace in the frame tree.
   const int frame_routing_id_;
 
   // Stores the WebRemoteFrame we are associated with.
   blink::WebRemoteFrame* web_frame_;
   scoped_refptr<ChildFrameCompositingHelper> compositing_helper_;
 
   RenderViewImpl* render_view_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameProxy);
 };
 
 }  // namespace
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_PROXY_H_