Allow parsing empty RTCP TargetBitrate messages, but stop sending them.

webrtc/common_types.h

 /*
  *  Copyright (c) 2012 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 614 matching lines @@
   uint32_t get_sum_bps() const { return sum_; }  // Sum of all bitrates.
   uint32_t get_sum_kbps() const { return (sum_ + 500) / 1000; }
 
   inline bool operator==(const BitrateAllocation& other) const {
     return memcmp(bitrates_, other.bitrates_, sizeof(bitrates_)) == 0;
   }
   inline bool operator!=(const BitrateAllocation& other) const {
     return !(*this == other);
   }
 
+  // Expensive, please use only in tests.
+  std::string ToString() const;
+  std::ostream& operator<<(std::ostream& os) const;
+
  private:
   uint32_t sum_;
   uint32_t bitrates_[kMaxSpatialLayers][kMaxTemporalStreams];
 };
 
 // Bandwidth over-use detector options.  These are used to drive
 // experimentation with bandwidth estimation parameters.
 // See modules/remote_bitrate_estimator/overuse_detector.h
 // TODO(terelius): This is only used in overuse_estimator.cc, and only in the
 // default constructed state. Can we move the relevant variables into that
@@ skipping 243 matching lines @@
 enum class RtcpMode { kOff, kCompound, kReducedSize };
 
 enum NetworkState {
   kNetworkUp,
   kNetworkDown,
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_COMMON_TYPES_H_