support video device enumeration from renderer process.

content/renderer/media/media_stream_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_MEDIA_STREAM_IMPL_H_
 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_IMPL_H_
 
 #include <list>
 #include <map>
 #include <string>
@@ skipping 86 matching lines @@
       const std::string& label,
       const media_stream::StreamDeviceInfoArray& audio_array,
       const media_stream::StreamDeviceInfoArray& video_array) OVERRIDE;
   virtual void OnStreamGenerationFailed(int request_id) OVERRIDE;
   virtual void OnVideoDeviceFailed(
       const std::string& label,
       int index) OVERRIDE;
   virtual void OnAudioDeviceFailed(
       const std::string& label,
       int index) OVERRIDE;
+  virtual void OnDevicesEnumerated(
+      int request_id,
+      const media_stream::StreamDeviceInfoArray& device_array) OVERRIDE;
+  virtual void OnDevicesEnumerationFailed(int request_id) OVERRIDE;
+  virtual void OnDeviceOpened(
+      int request_id,
+      const std::string& label,
+      const media_stream::StreamDeviceInfo& device_info) OVERRIDE;
+  virtual void OnDeviceOpenFailed(int request_id) OVERRIDE;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(MediaStreamImplTest, Basic);
 
   void InitializeWorkerThread(
       talk_base::Thread** thread,
       base::WaitableEvent* event);
   void DeleteIpcNetworkManager();
 
   scoped_ptr<MediaStreamDependencyFactory> dependency_factory_;
@@ skipping 42 matching lines @@
   // temporary and will be handled differently when several PeerConnections
   // and/or streams is supported.
   // TODO(grunell): This shall be removed or changed when native PeerConnection
   // has been updated to closer follow the specification.
   bool vcm_created_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamImpl);
 };
 
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_IMPL_H_