getUserMedia: handle the device starting status report.

content/renderer/media/user_media_client_impl.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_USER_MEDIA_CLIENT_IMPL_H_
 #define CONTENT_RENDERER_MEDIA_USER_MEDIA_CLIENT_IMPL_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 211 matching lines @@
       UserMediaRequestInfo* request);
 
   void CreateAudioTracks(
       const StreamDeviceInfoArray& devices,
       const blink::WebMediaConstraints& constraints,
       blink::WebVector<blink::WebMediaStreamTrack>* webkit_tracks,
       UserMediaRequestInfo* request);
 
   // Callback function triggered when all native versions of the
   // underlying media sources and tracks have been created and started.
-  void OnCreateNativeTracksCompleted(
-      UserMediaRequestInfo* request,
-      MediaStreamRequestResult result,
-      const blink::WebString& result_name);
+  void OnCreateNativeTracksCompleted(const std::string& label,
+                                     UserMediaRequestInfo* request,
+                                     MediaStreamRequestResult result,
+                                     const blink::WebString& result_name);
 
   void OnStreamGeneratedForCancelledRequest(
       const StreamDeviceInfoArray& audio_array,
       const StreamDeviceInfoArray& video_array);
 
   static void OnAudioSourceStartedOnAudioThread(
       scoped_refptr<base::SingleThreadTaskRunner> task_runner,
       base::WeakPtr<UserMediaClientImpl> weak_ptr,
       MediaStreamSource* source,
       MediaStreamRequestResult result,
@@ skipping 108 matching lines @@
   // Note: This member must be the last to ensure all outstanding weak pointers
   // are invalidated first.
   base::WeakPtrFactory<UserMediaClientImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(UserMediaClientImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_USER_MEDIA_CLIENT_IMPL_H_