Add unit test for stand-alone denoiser and fixed some bugs.

webrtc/video_frame.h

 /*
  *  Copyright (c) 2014 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 140 matching lines @@
   rtc::scoped_refptr<webrtc::VideoFrameBuffer> video_frame_buffer() const;
 
   // Set the underlying buffer.
   void set_video_frame_buffer(
       const rtc::scoped_refptr<webrtc::VideoFrameBuffer>& buffer);
 
   // Convert native-handle frame to memory-backed I420 frame. Should not be
   // called on a non-native-handle frame.
   VideoFrame ConvertNativeToI420Frame() const;
 
+  bool EqualsFrame(const VideoFrame& frame) const;
+
  private:
   // An opaque reference counted handle that stores the pixel data.
   rtc::scoped_refptr<webrtc::VideoFrameBuffer> video_frame_buffer_;
   uint32_t timestamp_;
   int64_t ntp_time_ms_;
   int64_t render_time_ms_;
   VideoRotation rotation_;
 };
 
 
@@ skipping 26 matching lines @@
   uint8_t* _buffer;
   size_t _length;
   size_t _size;
   bool _completeFrame = false;
   AdaptReason adapt_reason_;
   int qp_ = -1;  // Quantizer value.
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_VIDEO_FRAME_H_