ObjC: RTCVideoSource cleanup

webrtc/sdk/objc/Framework/Classes/RTCPeerConnectionFactory.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 71 matching lines @@
                                         trackId:trackId];
 }
 
 - (RTCAVFoundationVideoSource *)avFoundationVideoSourceWithConstraints:
     (nullable RTCMediaConstraints *)constraints {
   return [[RTCAVFoundationVideoSource alloc] initWithFactory:self
                                                  constraints:constraints];
 }
 
 - (RTCVideoSource *)videoSource {
-  rtc::scoped_refptr<webrtc::ObjcVideoTrackSource> objc_video_track_source(
+  rtc::scoped_refptr<webrtc::ObjcVideoTrackSource> objcVideoTrackSource(
       new rtc::RefCountedObject<webrtc::ObjcVideoTrackSource>());
-  return [[RTCVideoSource alloc] initWithNativeVideoSource:objc_video_track_source];
+  return [[RTCVideoSource alloc] initWithNativeVideoSource:objcVideoTrackSource];
 }
 
 - (RTCVideoTrack *)videoTrackWithSource:(RTCVideoSource *)source
                                 trackId:(NSString *)trackId {
   return [[RTCVideoTrack alloc] initWithFactory:self
                                          source:source
                                         trackId:trackId];
 }
 
 - (RTCMediaStream *)mediaStreamWithStreamId:(NSString *)streamId {
@@ skipping 30 matching lines @@
   _hasStartedAecDump = _nativeFactory->StartAecDump(fd, maxSizeInBytes);
   return _hasStartedAecDump;
 }
 
 - (void)stopAecDump {
   _nativeFactory->StopAecDump();
   _hasStartedAecDump = NO;
 }
 
 @end