Remove mutable from rtc::CriticalSection members.

webrtc/modules/audio_processing/audio_processing_impl_locking_unittest.cc

 /*
  *  Copyright (c) 2015 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 280 matching lines @@
   int RenderMinusCaptureCounters() const {
     return -CaptureMinusRenderCounters();
   }
 
   bool BothCountersExceedeThreshold(int threshold) {
     rtc::CritScope cs(&crit_);
     return (render_count > threshold && capture_count > threshold);
   }
 
  private:
-  mutable rtc::CriticalSection crit_;
+  rtc::CriticalSection crit_;
   int render_count GUARDED_BY(crit_) = 0;
   int capture_count GUARDED_BY(crit_) = 0;
 };
 
 // Class for handling the capture side processing.
 class CaptureProcessor {
  public:
   CaptureProcessor(int max_frame_size,
                    RandomGenerator* rand_gen,
                    rtc::Event* render_call_event,
@@ skipping 812 matching lines @@
     DISABLED_AudioProcessingImplLockExtensive,
     AudioProcessingImplLockTest,
     ::testing::ValuesIn(TestConfig::GenerateExtensiveTestConfigs()));
 
 INSTANTIATE_TEST_CASE_P(
     AudioProcessingImplLockBrief,
     AudioProcessingImplLockTest,
     ::testing::ValuesIn(TestConfig::GenerateBriefTestConfigs()));
 
 }  // namespace webrtc