Update thread annotiation macros in modules to use RTC_ prefix

webrtc/modules/audio_processing/noise_suppression_impl.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 26 matching lines @@
   bool is_enabled() const override;
   int set_level(Level level) override;
   Level level() const override;
   float speech_probability() const override;
   std::vector<float> NoiseEstimate() override;
   static size_t num_noise_bins();
 
  private:
   class Suppressor;
   rtc::CriticalSection* const crit_;
-  bool enabled_ GUARDED_BY(crit_) = false;
-  Level level_ GUARDED_BY(crit_) = kModerate;
-  size_t channels_ GUARDED_BY(crit_) = 0;
-  int sample_rate_hz_ GUARDED_BY(crit_) = 0;
-  std::vector<std::unique_ptr<Suppressor>> suppressors_ GUARDED_BY(crit_);
+  bool enabled_ RTC_GUARDED_BY(crit_) = false;
+  Level level_ RTC_GUARDED_BY(crit_) = kModerate;
+  size_t channels_ RTC_GUARDED_BY(crit_) = 0;
+  int sample_rate_hz_ RTC_GUARDED_BY(crit_) = 0;
+  std::vector<std::unique_ptr<Suppressor>> suppressors_ RTC_GUARDED_BY(crit_);
   RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(NoiseSuppressionImpl);
 };
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_NOISE_SUPPRESSION_IMPL_H_