[Extensions] Clean up the handling of ExtensionHostMsg_Request

extensions/browser/guest_view/extension_options/extension_options_guest.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_GUEST_VIEW_EXTENSION_OPTIONS_EXTENSION_OPTIONS_GUEST_H_
 #define EXTENSIONS_BROWSER_GUEST_VIEW_EXTENSION_OPTIONS_EXTENSION_OPTIONS_GUEST_H_
 
 #include "base/macros.h"
 #include "components/guest_view/browser/guest_view.h"
-#include "extensions/browser/extension_function_dispatcher.h"
 #include "extensions/browser/guest_view/extension_options/extension_options_guest_delegate.h"
 #include "url/gurl.h"
 
 namespace content {
 class BrowserContext;
 }
 
 namespace extensions {
 
 class ExtensionOptionsGuest
-    : public guest_view::GuestView<ExtensionOptionsGuest>,
-      public extensions::ExtensionFunctionDispatcher::Delegate {
+    : public guest_view::GuestView<ExtensionOptionsGuest> {
  public:
   static const char Type[];
   static guest_view::GuestViewBase* Create(
       content::WebContents* owner_web_contents);
 
   // GuestViewBase implementation.
   bool CanRunInDetachedState() const override;
   void CreateWebContents(const base::DictionaryValue& create_params,
                          const WebContentsCreatedCallback& callback) override;
   void DidInitialize(const base::DictionaryValue& create_params) override;
   void GuestViewDidStopLoading() override;
   const char* GetAPINamespace() const override;
   int GetTaskPrefix() const override;
   bool IsPreferredSizeModeEnabled() const override;
   bool IsDragAndDropEnabled() const override;
   void OnPreferredSizeChanged(const gfx::Size& pref_size) override;
 
-  // ExtensionFunctionDispatcher::Delegate implementation.
-  content::WebContents* GetAssociatedWebContents() const override;
-
   // content::WebContentsDelegate implementation.
   content::WebContents* OpenURLFromTab(
       content::WebContents* source,
       const content::OpenURLParams& params) override;
   void CloseContents(content::WebContents* source) override;
   bool HandleContextMenu(const content::ContextMenuParams& params) override;
   bool ShouldCreateWebContents(
       content::WebContents* web_contents,
       int route_id,
       int main_frame_route_id,
       WindowContainerType window_container_type,
       const base::string16& frame_name,
       const GURL& target_url,
       const std::string& partition_id,
       content::SessionStorageNamespace* session_storage_namespace) override;
 
   // content::WebContentsObserver implementation.
   void DidNavigateMainFrame(
       const content::LoadCommittedDetails& details,
       const content::FrameNavigateParams& params) override;
-  bool OnMessageReceived(const IPC::Message& message) override;
 
  private:
   explicit ExtensionOptionsGuest(content::WebContents* owner_web_contents);
   ~ExtensionOptionsGuest() override;
-  void OnRequest(const ExtensionHostMsg_Request_Params& params);
 
-  scoped_ptr<extensions::ExtensionFunctionDispatcher>
-      extension_function_dispatcher_;
   scoped_ptr<extensions::ExtensionOptionsGuestDelegate>
       extension_options_guest_delegate_;
   GURL options_page_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionOptionsGuest);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_GUEST_VIEW_EXTENSION_OPTIONS_EXTENSION_OPTIONS_GUEST_H_