Replace SetCapturer and SetCaptureDevice by SetSource.

webrtc/api/mediastreaminterface.h

Index: webrtc/api/mediastreaminterface.h
diff --git a/webrtc/api/mediastreaminterface.h b/webrtc/api/mediastreaminterface.h
index 69a50c97a3311b0e3259be0ea638e932e33e47dc..86b9fc593e86ffe13762a7e3d4d8bbe4dc4fef54 100644
--- a/webrtc/api/mediastreaminterface.h
+++ b/webrtc/api/mediastreaminterface.h
@@ -30,7 +30,6 @@
 namespace cricket {
 
 class AudioRenderer;
-class VideoCapturer;
 class VideoRenderer;
 class VideoFrame;
 
@@ -80,10 +79,8 @@ class MediaStreamTrackInterface : public rtc::RefCountInterface,
                                   public NotifierInterface {
  public:
   enum TrackState {
-    kInitializing,  // Track is beeing negotiated.
-    kLive = 1,  // Track alive
-    kEnded = 2,  // Track have ended
-    kFailed = 3,  // Track negotiation failed.
+    kLive = 1,
+    kEnded = 2,
   };
 
   static const char kAudioKind[];