Enable -Winconsistent-missing-override flag.

webrtc/modules/congestion_controller/congestion_controller.cc

 /*
  *  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 63 matching lines @@
     CriticalSectionScoped cs(crit_sect_.get());
     rbe_->RemoveStream(ssrc);
   }
 
   bool LatestEstimate(std::vector<unsigned int>* ssrcs,
                       unsigned int* bitrate_bps) const override {
     CriticalSectionScoped cs(crit_sect_.get());
     return rbe_->LatestEstimate(ssrcs, bitrate_bps);
   }
 
-  void SetMinBitrate(int min_bitrate_bps) {
+  void SetMinBitrate(int min_bitrate_bps) override {
     CriticalSectionScoped cs(crit_sect_.get());
     rbe_->SetMinBitrate(min_bitrate_bps);
     min_bitrate_bps_ = min_bitrate_bps;
   }
 
  private:
   void PickEstimatorFromHeader(const RTPHeader& header)
       EXCLUSIVE_LOCKS_REQUIRED(crit_sect_.get()) {
     if (header.extension.hasAbsoluteSendTime) {
       // If we see AST in header, switch RBE strategy immediately.
@@ skipping 144 matching lines @@
   return std::min(bitrate_controller_->TimeUntilNextProcess(),
                   remote_bitrate_estimator_->TimeUntilNextProcess());
 }
 
 void CongestionController::Process() {
   bitrate_controller_->Process();
   remote_bitrate_estimator_->Process();
 }
 
 }  // namespace webrtc