Refactor postMessage for out-of-process iframes.

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 82 matching lines @@
   bool Send(IPC::Message* msg) override;
 
   // Out-of-process child frames receive a signal from RenderWidgetCompositor
   // when a compositor frame has committed.
   void DidCommitCompositorFrame();
 
   // Pass replicated information, such as security origin, to this
   // RenderFrameProxy's WebRemoteFrame.
   void SetReplicatedState(const FrameReplicationState& state);
 
+  // Navigating a top-level frame cross-process does not swap the WebLocalFrame
+  // for a WebRemoteFrame in the frame tree. In this case, this WebRemoteFrame
+  // is not attached to the frame tree and there is no blink::Frame associated
+  // with it, so it is not in state where most operations on it will succeed.
+  bool IsMainFrameDetachedFromTree() const;
+
   int routing_id() { return routing_id_; }
   RenderViewImpl* render_view() { return render_view_; }
   blink::WebRemoteFrame* web_frame() { return web_frame_; }
 
   // blink::WebRemoteFrameClient implementation:
   virtual void frameDetached();
   virtual void postMessageEvent(
       blink::WebLocalFrame* sourceFrame,
       blink::WebRemoteFrame* targetFrame,
       blink::WebSecurityOrigin target,
       blink::WebDOMMessageEvent event);
   virtual void initializeChildFrame(
       const blink::WebRect& frame_rect,
       float scale_factor);
   virtual void navigate(const blink::WebURLRequest& request,
                         bool should_replace_current_entry);
   virtual void forwardInputEvent(const blink::WebInputEvent* event);
 
   // IPC handlers
   void OnDidStartLoading();
 
  private:
   RenderFrameProxy(int routing_id, int frame_routing_id);
 
   void Init(blink::WebRemoteFrame* frame, RenderViewImpl* render_view);
 
-  // Navigating a top-level frame cross-process does not swap the WebLocalFrame
-  // for a WebRemoteFrame in the frame tree. In this case, this WebRemoteFrame
-  // is not attached to the frame tree and there is no blink::Frame associated
-  // with it, so it is not in state where most operations on it will succeed.
-  bool IsMainFrameDetachedFromTree() const;
-
   // IPC::Listener
   bool OnMessageReceived(const IPC::Message& msg) override;
 
   // IPC handlers
   void OnDeleteProxy();
   void OnChildFrameProcessGone();
   void OnCompositorFrameSwapped(const IPC::Message& message);
   void OnDisownOpener();
   void OnDidStopLoading();
   void OnDidUpdateSandboxFlags(SandboxFlags flags);
@@ skipping 12 matching lines @@
   scoped_refptr<ChildFrameCompositingHelper> compositing_helper_;
 
   RenderViewImpl* render_view_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameProxy);
 };
 
 }  // namespace
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_PROXY_H_