Update thread annotiation macros to use RTC_ prefix

webrtc/test/frame_generator.h

 /*
  *  Copyright (c) 2013 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.
  */
 #ifndef WEBRTC_TEST_FRAME_GENERATOR_H_
@@ skipping 24 matching lines @@
   virtual void IncomingCapturedFrame(const VideoFrame& video_frame);
   rtc::VideoSinkWants sink_wants() const;
   bool has_sinks() const;
 
  protected:
   void AddOrUpdateSink(rtc::VideoSinkInterface<VideoFrame>* sink,
                        const rtc::VideoSinkWants& wants) override;
   void RemoveSink(rtc::VideoSinkInterface<VideoFrame>* sink) override;
 
   rtc::CriticalSection crit_;
-  rtc::VideoSinkInterface<VideoFrame>* sink_ GUARDED_BY(crit_);
-  rtc::VideoSinkWants sink_wants_ GUARDED_BY(crit_);
+  rtc::VideoSinkInterface<VideoFrame>* sink_ RTC_GUARDED_BY(crit_);
+  rtc::VideoSinkWants sink_wants_ RTC_GUARDED_BY(crit_);
 };
 
 class FrameGenerator {
  public:
   virtual ~FrameGenerator() = default;
 
   // Returns video frame that remains valid until next call.
   virtual VideoFrame* NextFrame() = 0;
 
   // Change the capture resolution.
@@ skipping 35 matching lines @@
 
   // Creates a frame generator that produces randomly generated slides.
   // frame_repeat_count determines how many times each slide is shown.
   static std::unique_ptr<FrameGenerator> CreateSlideGenerator(
       int width, int height, int frame_repeat_count);
 };
 }  // namespace test
 }  // namespace webrtc
 
 #endif  // WEBRTC_TEST_FRAME_GENERATOR_H_