Update thread annotiation macros to use RTC_ prefix

webrtc/video/send_delay_stats.h

 /*
  *  Copyright (c) 2016 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 46 matching lines @@
           capture_time_ms(capture_time_ms),
           send_time_ms(send_time_ms) {}
     uint32_t ssrc;
     int64_t capture_time_ms;
     int64_t send_time_ms;
   };
   typedef std::map<uint16_t, Packet, SequenceNumberOlderThan> PacketMap;
 
   void UpdateHistograms();
   void RemoveOld(int64_t now, PacketMap* packets)
-      EXCLUSIVE_LOCKS_REQUIRED(crit_);
+      RTC_EXCLUSIVE_LOCKS_REQUIRED(crit_);
   AvgCounter* GetSendDelayCounter(uint32_t ssrc)
-      EXCLUSIVE_LOCKS_REQUIRED(crit_);
+      RTC_EXCLUSIVE_LOCKS_REQUIRED(crit_);
 
   Clock* const clock_;
   rtc::CriticalSection crit_;
 
-  PacketMap packets_ GUARDED_BY(crit_);
-  size_t num_old_packets_ GUARDED_BY(crit_);
-  size_t num_skipped_packets_ GUARDED_BY(crit_);
+  PacketMap packets_ RTC_GUARDED_BY(crit_);
+  size_t num_old_packets_ RTC_GUARDED_BY(crit_);
+  size_t num_skipped_packets_ RTC_GUARDED_BY(crit_);
 
-  std::set<uint32_t> ssrcs_ GUARDED_BY(crit_);
+  std::set<uint32_t> ssrcs_ RTC_GUARDED_BY(crit_);
 
   // Mapped by SSRC.
   std::map<uint32_t, std::unique_ptr<AvgCounter>> send_delay_counters_
-      GUARDED_BY(crit_);
+      RTC_GUARDED_BY(crit_);
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_VIDEO_SEND_DELAY_STATS_H_