Revert of Properly report number of quality downscales in stats.

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 131 matching lines @@
 
   // Some decoders require encoded image buffers to be padded with a small
   // number of additional bytes (due to over-reading byte readers).
   static size_t GetBufferPaddingBytes(VideoCodecType codec_type);
 
   EncodedImage() : EncodedImage(nullptr, 0, 0) {}
 
   EncodedImage(uint8_t* buffer, size_t length, size_t size)
       : _buffer(buffer), _length(length), _size(size) {}
 
-  // TODO(kthelgason): get rid of this struct as it only has a single member
-  // remaining.
   struct AdaptReason {
-    AdaptReason() : bw_resolutions_disabled(-1) {}
+    AdaptReason()
+        : quality_resolution_downscales(-1),
+          bw_resolutions_disabled(-1) {}
+
+    int quality_resolution_downscales;  // Number of times this frame is down
+                                        // scaled in resolution due to quality.
+                                        // Or -1 if information is not provided.
     int bw_resolutions_disabled;  // Number of resolutions that are not sent
                                   // due to bandwidth for this frame.
                                   // Or -1 if information is not provided.
   };
   uint32_t _encodedWidth = 0;
   uint32_t _encodedHeight = 0;
   uint32_t _timeStamp = 0;
   // NTP time of the capture time in local timebase in milliseconds.
   int64_t ntp_time_ms_ = 0;
   int64_t capture_time_ms_ = 0;
   FrameType _frameType = kVideoFrameDelta;
   uint8_t* _buffer;
   size_t _length;
   size_t _size;
   VideoRotation rotation_ = kVideoRotation_0;
   bool _completeFrame = false;
   AdaptReason adapt_reason_;
   int qp_ = -1;  // Quantizer value.
 
   // When an application indicates non-zero values here, it is taken as an
   // indication that all future frames will be constrained with those limits
   // until the application indicates a change again.
   PlayoutDelay playout_delay_ = {-1, -1};
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_VIDEO_FRAME_H_