Remove mutable from rtc::CriticalSection members.

webrtc/call/congestion_controller.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 56 matching lines @@
 
   virtual void OnSentPacket(const rtc::SentPacket& sent_packet);
 
  private:
   rtc::scoped_ptr<VieRemb> remb_;
   rtc::scoped_ptr<PacketRouter> packet_router_;
   rtc::scoped_ptr<PacedSender> pacer_;
   rtc::scoped_ptr<RemoteBitrateEstimator> remote_bitrate_estimator_;
   rtc::scoped_ptr<RemoteEstimatorProxy> remote_estimator_proxy_;
 
-  mutable rtc::CriticalSection encoder_crit_;
+  rtc::CriticalSection encoder_crit_;
   std::vector<ViEEncoder*> encoders_ GUARDED_BY(encoder_crit_);
 
   // Registered at construct time and assumed to outlive this class.
   ProcessThread* const process_thread_;
   CallStats* const call_stats_;
 
   rtc::scoped_ptr<ProcessThread> pacer_thread_;
 
   rtc::scoped_ptr<BitrateController> bitrate_controller_;
   rtc::scoped_ptr<TransportFeedbackAdapter> transport_feedback_adapter_;
   int min_bitrate_bps_;
 
   RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(CongestionController);
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_CALL_CONGESTION_CONTROLLER_H_