Support cancellation of request for opening device.

content/renderer/media/mock_media_stream_dispatcher.h

 // Copyright (c) 2012 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_MEDIA_MOCK_MEDIA_STREAM_DISPATCHER_H_
 #define CONTENT_RENDERER_MEDIA_MOCK_MEDIA_STREAM_DISPATCHER_H_
 
 #include <string>
 
 #include "content/renderer/media/media_stream_dispatcher.h"
 #include "googleurl/src/gurl.h"
 
 namespace content {
 
 // This class is a mock implementation of MediaStreamDispatcher.
 class MockMediaStreamDispatcher : public MediaStreamDispatcher {
  public:
   MockMediaStreamDispatcher();
   virtual ~MockMediaStreamDispatcher();
 
   virtual void GenerateStream(
       int request_id,
       const base::WeakPtr<MediaStreamDispatcherEventHandler>& event_handler,
       const StreamOptions& components,
       const GURL& url) OVERRIDE;
-  virtual void CancelGenerateStream(int request_id) OVERRIDE;
+  virtual void CancelGenerateStream(
+      int request_id,
+      const base::WeakPtr<MediaStreamDispatcherEventHandler>&
+          event_handler) OVERRIDE;
   virtual void StopStream(const std::string& label) OVERRIDE;
   virtual bool IsStream(const std::string& label) OVERRIDE;
   virtual int video_session_id(const std::string& label, int index) OVERRIDE;
   virtual int audio_session_id(const std::string& label, int index) OVERRIDE;
 
   int request_id() const { return request_id_; }
   int request_stream_counter() const { return request_stream_counter_; }
   int stop_stream_counter() const { return stop_stream_counter_; }
   const std::string& stream_label() const { return stream_label_;}
   StreamDeviceInfoArray audio_array() const { return audio_array_; }
   StreamDeviceInfoArray video_array() const { return video_array_; }
 
  private:
   int request_id_;
   base::WeakPtr<MediaStreamDispatcherEventHandler> event_handler_;
   int request_stream_counter_;
   int stop_stream_counter_;
 
   std::string stream_label_;
   StreamDeviceInfoArray audio_array_;
   StreamDeviceInfoArray video_array_;
 
   DISALLOW_COPY_AND_ASSIGN(MockMediaStreamDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MOCK_MEDIA_STREAM_DISPATCHER_H_