Extended proxy abstraction, to call certain methods to the worker thread.

webrtc/api/test/fakevideotracksource.h

 /*
  *  Copyright 2016 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 12 matching lines @@
     return new rtc::RefCountedObject<FakeVideoTrackSource>();
   }
 
   cricket::FakeVideoCapturer* fake_video_capturer() {
     return &fake_video_capturer_;
   }
 
  protected:
   FakeVideoTrackSource()
       : VideoTrackSource(&fake_video_capturer_,
-                         rtc::Thread::Current(),
                          false /* remote */) {}
   virtual ~FakeVideoTrackSource() {}
 
  private:
   cricket::FakeVideoCapturer fake_video_capturer_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_TEST_FAKEVIDEOTRACKSOURCE_H_