Delete unused VideoCapturer statistics.

webrtc/api/objc/avfoundationvideocapturer.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.
  */
 
 #include "webrtc/api/objc/avfoundationvideocapturer.h"
 
 #include "webrtc/base/bind.h"
+#include "webrtc/base/thread.h"
 
 #import <AVFoundation/AVFoundation.h>
 #import <Foundation/Foundation.h>
 #import <UIKit/UIKit.h>
 
 #import "webrtc/base/objc/RTCDispatcher.h"
 #import "webrtc/base/objc/RTCLogging.h"
 
 // TODO(tkchin): support other formats.
 static NSString* const kDefaultPreset = AVCaptureSessionPreset640x480;
@@ skipping 410 matching lines @@
 
 void AVFoundationVideoCapturer::SignalFrameCapturedOnStartThread(
     const cricket::CapturedFrame *frame) {
   RTC_DCHECK(_startThread->IsCurrent());
   // This will call a superclass method that will perform the frame conversion
   // to I420.
   SignalFrameCaptured(this, frame);
 }
 
 }  // namespace webrtc