Change GuestViewInternalCreateGuestFunction to create the guest view using the

extensions/browser/extension_function_dispatcher.cc

 // 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.
 
 #include "extensions/browser/extension_function_dispatcher.h"
 
 #include "base/bind.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
@@ skipping 184 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(UIThreadResponseCallbackWrapper);
 };
 
 WindowController*
 ExtensionFunctionDispatcher::Delegate::GetExtensionWindowController() const {
   return NULL;
 }
 
 content::WebContents*
 ExtensionFunctionDispatcher::Delegate::GetAssociatedWebContents() const {
+  NOTIMPLEMENTED();
   return NULL;
 }
 
 content::WebContents*
 ExtensionFunctionDispatcher::Delegate::GetVisibleWebContents() const {
   return GetAssociatedWebContents();
 }
 
 void ExtensionFunctionDispatcher::GetAllFunctionNames(
     std::vector<std::string>* names) {
@@ skipping 247 matching lines @@
 
 // static
 void ExtensionFunctionDispatcher::SendAccessDenied(
     const ExtensionFunction::ResponseCallback& callback) {
   base::ListValue empty_list;
   callback.Run(ExtensionFunction::FAILED, empty_list,
                "Access to extension API denied.");
 }
 
 }  // namespace extensions