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

talk/app/webrtc/objc/RTCEnumConverter.mm

 /*
  * libjingle
  * Copyright 2013 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 93 matching lines @@
     case webrtc::MediaSourceInterface::kEnded:
       return RTCSourceStateEnded;
     case webrtc::MediaSourceInterface::kMuted:
       return RTCSourceStateMuted;
   }
 }
 
 + (webrtc::MediaStreamTrackInterface::TrackState)
     convertTrackStateToNative:(RTCTrackState)state {
   switch (state) {
-    case RTCTrackStateInitializing:
-      return webrtc::MediaStreamTrackInterface::kInitializing;
     case RTCTrackStateLive:
       return webrtc::MediaStreamTrackInterface::kLive;
     case RTCTrackStateEnded:
       return webrtc::MediaStreamTrackInterface::kEnded;
-    case RTCTrackStateFailed:
-      return webrtc::MediaStreamTrackInterface::kFailed;
   }
 }
 
 + (RTCTrackState)convertTrackStateToObjC:
     (webrtc::MediaStreamTrackInterface::TrackState)nativeState {
   switch (nativeState) {
-    case webrtc::MediaStreamTrackInterface::kInitializing:
-      return RTCTrackStateInitializing;
     case webrtc::MediaStreamTrackInterface::kLive:
       return RTCTrackStateLive;
     case webrtc::MediaStreamTrackInterface::kEnded:
       return RTCTrackStateEnded;
-    case webrtc::MediaStreamTrackInterface::kFailed:
-      return RTCTrackStateFailed;
   }
 }
 
 + (RTCIceTransportsType)iceTransportsTypeForNativeEnum:
         (webrtc::PeerConnectionInterface::IceTransportsType)nativeEnum {
   switch (nativeEnum) {
     case webrtc::PeerConnectionInterface::kNone:
       return kRTCIceTransportsTypeNone;
     case webrtc::PeerConnectionInterface::kRelay:
       return kRTCIceTransportsTypeRelay;
@@ skipping 76 matching lines @@
         (RTCTcpCandidatePolicy)tcpCandidatePolicy {
   switch (tcpCandidatePolicy) {
     case kRTCTcpCandidatePolicyEnabled:
       return webrtc::PeerConnectionInterface::kTcpCandidatePolicyEnabled;
     case kRTCTcpCandidatePolicyDisabled:
       return webrtc::PeerConnectionInterface::kTcpCandidatePolicyDisabled;
   }
 }
 
 @end