Adds plumbing to pass WebUI mojo::Handle from browser to renderer

content/renderer/web_ui_mojo.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_WEB_UI_MOJO_H_
 #define CONTENT_RENDERER_WEB_UI_MOJO_H_
 
 #include <string>
 
 #include "content/public/renderer/render_frame_observer.h"
 #include "content/public/renderer/render_view_observer.h"
 #include "content/public/renderer/render_view_observer_tracker.h"
-#include "mojo/public/system/core.h"
+#include "mojo/public/system/core_cpp.h"
 
 namespace gin {
 class PerContextData;
 }
 
 namespace content {
 
 class WebUIMojoContextState;
 
 // WebUIMojo is responsible for enabling the renderer side of mojo bindings.
 // It creates (and destroys) a WebUIMojoContextState at the appropriate times
 // and handles the necessary browser messages. WebUIMojo destroys itself when
 // the RendererView it is created with is destroyed.
 class WebUIMojo
     : public RenderViewObserver,
       public RenderViewObserverTracker<WebUIMojo> {
  public:
   explicit WebUIMojo(RenderView* render_view);
 
+  // Sets the handle to the current WebUI.
+  void SetBrowserHandle(mojo::ScopedMessagePipeHandle handle);
+
  private:
   class MainFrameObserver : public RenderFrameObserver {
    public:
     explicit MainFrameObserver(WebUIMojo* web_ui_mojo);
     virtual ~MainFrameObserver();
 
     // RenderFrameObserver overrides:
     virtual void WillReleaseScriptContext(v8::Handle<v8::Context> context,
                                           int world_id) OVERRIDE;
 
    private:
     WebUIMojo* web_ui_mojo_;
 
     DISALLOW_COPY_AND_ASSIGN(MainFrameObserver);
   };
 
   virtual ~WebUIMojo();
 
-  // Invoked from ViewMsg_SetBrowserHandle. Passes handle to current
-  // MojoWebUIContextState.
-  void OnSetBrowserHandle(MojoHandle handle);
-
   void CreateContextState();
   void DestroyContextState(v8::Handle<v8::Context> context);
 
   WebUIMojoContextState* GetContextState();
 
   // RenderViewObserver overrides:
   virtual void DidClearWindowObject(blink::WebFrame* frame,
                                     int world_id) OVERRIDE;
 
   MainFrameObserver main_frame_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(WebUIMojo);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_WEB_UI_MOJO_H_