Add a flags field to video timing extension.

webrtc/common_video/include/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 18 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) {}
 
   void SetEncodeTime(int64_t encode_start_ms, int64_t encode_finish_ms) const {
-    timing_.is_timing_frame = true;
     timing_.encode_start_ms = encode_start_ms;
     timing_.encode_finish_ms = encode_finish_ms;
   }
 
   // TODO(kthelgason): get rid of this struct as it only has a single member
   // remaining.
   struct AdaptReason {
     AdaptReason() : bw_resolutions_disabled(-1) {}
     int bw_resolutions_disabled;  // Number of resolutions that are not sent
                                   // due to bandwidth for this frame.
@@ skipping 15 matching lines @@
   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};
 
   // Timing information should be updatable on const instances.
   mutable struct Timing {
-    bool is_timing_frame = false;
+    uint8_t flags = TimingFrameFlags::kInvalid;
     int64_t encode_start_ms = 0;
     int64_t encode_finish_ms = 0;
     int64_t packetization_finish_ms = 0;
     int64_t pacer_exit_ms = 0;
     int64_t network_timestamp_ms = 0;
     int64_t network2_timestamp_ms = 0;
     int64_t receive_start_ms = 0;
     int64_t receive_finish_ms = 0;
   } timing_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_COMMON_VIDEO_INCLUDE_VIDEO_FRAME_H_