Propagate MediaStreamSource state to video tracks the same way as audio.

webrtc/api/objc/RTCMediaStreamTrack.mm

 /*
  *  Copyright 2015 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 49 matching lines @@
   if (self = [super init]) {
     _nativeTrack = nativeTrack;
     _type = type;
   }
   return self;
 }
 
 + (webrtc::MediaStreamTrackInterface::TrackState)nativeTrackStateForState:
     (RTCMediaStreamTrackState)state {
   switch (state) {
-    case RTCMediaStreamTrackStateInitializing:
-      return webrtc::MediaStreamTrackInterface::kInitializing;
     case RTCMediaStreamTrackStateLive:
       return webrtc::MediaStreamTrackInterface::kLive;
     case RTCMediaStreamTrackStateEnded:
       return webrtc::MediaStreamTrackInterface::kEnded;
-    case RTCMediaStreamTrackStateFailed:
-      return webrtc::MediaStreamTrackInterface::kFailed;
   }
 }
 
 + (RTCMediaStreamTrackState)trackStateForNativeState:
     (webrtc::MediaStreamTrackInterface::TrackState)nativeState {
   switch (nativeState) {
-    case webrtc::MediaStreamTrackInterface::kInitializing:
-      return RTCMediaStreamTrackStateInitializing;
     case webrtc::MediaStreamTrackInterface::kLive:
       return RTCMediaStreamTrackStateLive;
     case webrtc::MediaStreamTrackInterface::kEnded:
       return RTCMediaStreamTrackStateEnded;
-    case webrtc::MediaStreamTrackInterface::kFailed:
-      return RTCMediaStreamTrackStateFailed;
   }
 }
 
 + (NSString *)stringForState:(RTCMediaStreamTrackState)state {
   switch (state) {
-    case RTCMediaStreamTrackStateInitializing:
-      return @"Initializing";
     case RTCMediaStreamTrackStateLive:
       return @"Live";
     case RTCMediaStreamTrackStateEnded:
       return @"Ended";
-    case RTCMediaStreamTrackStateFailed:
-      return @"Failed";
   }
 }
 
 @end