Change GuestViewInternalCreateGuestFunction to create the guest view using the

extensions/browser/extension_host.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_BROWSER_EXTENSION_HOST_H_
 #define EXTENSIONS_BROWSER_EXTENSION_HOST_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 121 matching lines @@
 
   // Actually create the RenderView for this host. See CreateRenderViewSoon.
   void CreateRenderViewNow();
 
   // Message handlers.
   void OnRequest(const ExtensionHostMsg_Request_Params& params);
   void OnEventAck();
   void OnIncrementLazyKeepaliveCount();
   void OnDecrementLazyKeepaliveCount();
 
+  // ExtensionFunctionDispatcher::Delegate
+  virtual content::WebContents* GetAssociatedWebContents() const OVERRIDE;
+
   // Delegate for functionality that cannot exist in the extensions module.
   scoped_ptr<ExtensionHostDelegate> delegate_;
 
   // The extension that we're hosting in this view.
   const Extension* extension_;
 
   // Id of extension that we're hosting in this view.
   const std::string extension_id_;
 
   // The browser context that this host is tied to.
@@ skipping 25 matching lines @@
 
   // Used to measure how long it's been since the host was created.
   base::ElapsedTimer since_created_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionHost);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_EXTENSION_HOST_H_