Update thread annotiation macros to use RTC_ prefix

webrtc/voice_engine/audio_level.h

 /*
  *  Copyright (c) 2011 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 27 matching lines @@
   // Called on a native capture audio thread (platform dependent) from the
   // AudioTransport::RecordedDataIsAvailable() callback.
   // In Chrome, this method is called on the AudioInputDevice thread.
   void ComputeLevel(const AudioFrame& audioFrame, double duration);
 
  private:
   enum { kUpdateFrequency = 10 };
 
   rtc::CriticalSection crit_sect_;
 
-  int16_t abs_max_ GUARDED_BY(crit_sect_);
-  int16_t count_ GUARDED_BY(crit_sect_);
-  int8_t current_level_ GUARDED_BY(crit_sect_);
-  int16_t current_level_full_range_ GUARDED_BY(crit_sect_);
+  int16_t abs_max_ RTC_GUARDED_BY(crit_sect_);
+  int16_t count_ RTC_GUARDED_BY(crit_sect_);
+  int8_t current_level_ RTC_GUARDED_BY(crit_sect_);
+  int16_t current_level_full_range_ RTC_GUARDED_BY(crit_sect_);
 
-  double total_energy_ GUARDED_BY(crit_sect_) = 0.0;
-  double total_duration_ GUARDED_BY(crit_sect_) = 0.0;
+  double total_energy_ RTC_GUARDED_BY(crit_sect_) = 0.0;
+  double total_duration_ RTC_GUARDED_BY(crit_sect_) = 0.0;
 };
 
 }  // namespace voe
 }  // namespace webrtc
 
 #endif  // WEBRTC_VOICE_ENGINE_AUDIO_LEVEL_H_