Fix message routing for BrowserPlugin in iframe

extensions/renderer/guest_view/mime_handler_view/mime_handler_view_container.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_RENDERER_GUEST_VIEW_MIME_HANDLER_VIEW_CONTAINER_H_
 #define EXTENSIONS_RENDERER_GUEST_VIEW_MIME_HANDLER_VIEW_CONTAINER_H_
 
 #include "extensions/renderer/guest_view/guest_view_container.h"
 #include "third_party/WebKit/public/platform/WebURLLoader.h"
 #include "third_party/WebKit/public/platform/WebURLLoaderClient.h"
@@ skipping 21 matching lines @@
                                  public blink::WebURLLoaderClient {
  public:
   MimeHandlerViewContainer(content::RenderFrame* render_frame,
                            const std::string& mime_type,
                            const GURL& original_url);
   ~MimeHandlerViewContainer() override;
 
   // BrowserPluginDelegate implementation.
   void DidFinishLoading() override;
   void DidReceiveData(const char* data, int data_length) override;
+  bool OnMessageReceived(const IPC::Message& message) override;
   void Ready() override;
 
-  // GuestViewContainer overrides.
-  bool HandlesMessage(const IPC::Message& message) override;
-  bool OnMessage(const IPC::Message& message) override;
-
   // WebURLLoaderClient overrides.
   void didReceiveData(blink::WebURLLoader* loader,
                       const char* data,
                       int data_length,
                       int encoded_data_length) override;
   void didFinishLoading(blink::WebURLLoader* loader,
                         double finish_time,
                         int64_t total_encoded_data_length) override;
 
  private:
@@ skipping 17 matching lines @@
   // A URL loader to load the |original_url_| when the plugin is embedded. In
   // the embedded case, no URL request is made automatically.
   scoped_ptr<blink::WebURLLoader> loader_;
 
   DISALLOW_COPY_AND_ASSIGN(MimeHandlerViewContainer);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_GUEST_VIEW_MIME_HANDLER_VIEW_CONTAINER_H_