Add different error codes for getUserMedia.

content/renderer/media/media_stream_dispatcher.cc

 // 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.
 
 #include "content/renderer/media/media_stream_dispatcher.h"
 
 #include "base/logging.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "content/common/media/media_stream_messages.h"
 #include "content/renderer/media/media_stream_dispatcher_eventhandler.h"
@@ skipping 246 matching lines @@
             request.request_id, label, audio_array, video_array);
         DVLOG(1) << "MediaStreamDispatcher::OnStreamGenerated("
                  << request.request_id << ", " << label << ")";
       }
       requests_.erase(it);
       break;
     }
   }
 }
 
-void MediaStreamDispatcher::OnStreamGenerationFailed(int request_id) {
+void MediaStreamDispatcher::OnStreamGenerationFailed(
+    int request_id,
+    content::MediaStreamRequestResult result) {
   DCHECK(main_loop_->BelongsToCurrentThread());
   for (RequestList::iterator it = requests_.begin();
        it != requests_.end(); ++it) {
     Request& request = *it;
     if (request.ipc_request == request_id) {
       if (request.handler.get()) {
-        request.handler->OnStreamGenerationFailed(request.request_id);
+        request.handler->OnStreamGenerationFailed(request.request_id, result);
         DVLOG(1) << "MediaStreamDispatcher::OnStreamGenerationFailed("
                  << request.request_id << ")\n";
       }
       requests_.erase(it);
       break;
     }
   }
 }
 
 void MediaStreamDispatcher::OnDeviceStopped(
@@ skipping 103 matching lines @@
                                             int index) {
   LabelStreamMap::iterator it = label_stream_map_.find(label);
   if (it == label_stream_map_.end() ||
       it->second.video_array.size() <= static_cast<size_t>(index)) {
     return StreamDeviceInfo::kNoId;
   }
   return it->second.video_array[index].session_id;
 }
 
 }  // namespace content