Revert of Add ability to scale to arbitrary factors

webrtc/media/base/adaptedvideotracksource.h

 /*
  *  Copyright (c) 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 10 matching lines @@
 // Base class for sources which needs video adaptation, e.g., video
 // capture sources. Sinks must be added and removed on one and only
 // one thread, while AdaptFrame and OnFrame may be called on any
 // thread.
 class AdaptedVideoTrackSource
     : public webrtc::Notifier<webrtc::VideoTrackSourceInterface> {
  public:
   AdaptedVideoTrackSource();
 
  protected:
-  // Allows derived classes to initialize |video_adapter_| with a custom
-  // alignment.
-  AdaptedVideoTrackSource(int required_alignment);
   // Checks the apply_rotation() flag. If the frame needs rotation, and it is a
   // plain memory frame, it is rotated. Subclasses producing native frames must
   // handle apply_rotation() themselves.
   void OnFrame(const webrtc::VideoFrame& frame);
 
   // Reports the appropriate frame size after adaptation. Returns true
   // if a frame is wanted. Returns false if there are no interested
   // sinks, or if the VideoAdapter decides to drop the frame.
   bool AdaptFrame(int width,
                   int height,
@@ skipping 31 matching lines @@
 
   rtc::CriticalSection stats_crit_;
   rtc::Optional<Stats> stats_ GUARDED_BY(stats_crit_);
 
   VideoBroadcaster broadcaster_;
 };
 
 }  // namespace rtc
 
 #endif  // WEBRTC_MEDIA_BASE_ADAPTEDVIDEOTRACKSOURCE_H_