Remove mutable from rtc::CriticalSections.

webrtc/video/vie_channel.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 314 matching lines @@
 
     void Set(T* callback) {
       rtc::CritScope lock(&critsect_);
       callback_ = callback;
     }
 
    protected:
     // Note: this should be implemented with a RW-lock to allow simultaneous
     // calls into the callback. However that doesn't seem to be needed for the
     // current type of callbacks covered by this class.
-    mutable rtc::CriticalSection critsect_;
+    rtc::CriticalSection critsect_;
     T* callback_ GUARDED_BY(critsect_);
 
    private:
     RTC_DISALLOW_COPY_AND_ASSIGN(RegisterableCallback);
   };
 
   class RegisterableBitrateStatisticsObserver:
     public RegisterableCallback<BitrateStatisticsObserver> {
     virtual void Notify(const BitrateStatistics& total_stats,
                         const BitrateStatistics& retransmit_stats,
@@ skipping 50 matching lines @@
     std::map<uint32_t, RtcpPacketTypeCounter> counter_map_
         GUARDED_BY(critsect_);
   } rtcp_packet_type_counter_observer_;
 
   const uint32_t number_of_cores_;
   const bool sender_;
 
   ProcessThread* const module_process_thread_;
 
   // Used for all registered callbacks except rendering.
-  mutable rtc::CriticalSection crit_;
+  rtc::CriticalSection crit_;
 
   // Owned modules/classes.
   rtc::scoped_refptr<PayloadRouter> send_payload_router_;
   rtc::scoped_ptr<ViEChannelProtectionCallback> vcm_protection_callback_;
 
   VideoCodingModule* const vcm_;
   ViEReceiver vie_receiver_;
   ViESyncModule vie_sync_;
 
   // Helper to report call statistics.
@@ skipping 25 matching lines @@
   size_t num_rtts_ GUARDED_BY(crit_);
 
   // RtpRtcp modules, declared last as they use other members on construction.
   const std::vector<RtpRtcp*> rtp_rtcp_modules_;
   size_t num_active_rtp_rtcp_modules_ GUARDED_BY(crit_);
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_VIDEO_VIE_CHANNEL_H_