Renamed VideoSourceInterface to VideoTrackSourceInterface.

talk/app/webrtc/objc/RTCVideoTrack.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 45 matching lines @@
     [self configure];
     _source = source;
   }
   return self;
 }
 
 - (instancetype)initWithMediaTrack:
     (rtc::scoped_refptr<webrtc::MediaStreamTrackInterface>)mediaTrack {
   if (self = [super initWithMediaTrack:mediaTrack]) {
     [self configure];
-    rtc::scoped_refptr<webrtc::VideoSourceInterface> source =
+    rtc::scoped_refptr<webrtc::VideoTrackSourceInterface> source =
         self.nativeVideoTrack->GetSource();
     if (source) {
       _source = [[RTCVideoSource alloc] initWithMediaSource:source.get()];
     }
   }
   return self;
 }
 
 - (void)configure {
   _adapters = [NSMutableArray array];
@@ skipping 36 matching lines @@
 
 @end
 
 @implementation RTCVideoTrack (Internal)
 
 - (rtc::scoped_refptr<webrtc::VideoTrackInterface>)nativeVideoTrack {
   return static_cast<webrtc::VideoTrackInterface*>(self.mediaTrack.get());
 }
 
 @end