Add different error codes for getUserMedia.

content/renderer/media/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_MEDIA_STREAM_DISPATCHER_H_
 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_DISPATCHER_H_
 
 #include <list>
 #include <map>
 #include <string>
@@ skipping 97 matching lines @@
   // RenderViewObserver OVERRIDE.
   virtual bool Send(IPC::Message* message) OVERRIDE;
 
   // Messages from the browser.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   void OnStreamGenerated(
       int request_id,
       const std::string& label,
       const StreamDeviceInfoArray& audio_array,
       const StreamDeviceInfoArray& video_array);
-  void OnStreamGenerationFailed(int request_id);
+  void OnStreamGenerationFailed(
+      int request_id,
+      content::MediaStreamRequestResult result);
   void OnDeviceStopped(const std::string& label,
                        const StreamDeviceInfo& device_info);
   void OnDevicesEnumerated(
       int request_id,
       const StreamDeviceInfoArray& device_array);
   void OnDevicesEnumerationFailed(int request_id);
   void OnDeviceOpened(
       int request_id,
       const std::string& label,
       const StreamDeviceInfo& device_info);
@@ skipping 10 matching lines @@
   // been canceled.
   typedef std::list<Request> RequestList;
   RequestList requests_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_DISPATCHER_H_