Update thread annotiation macros in modules to use RTC_ prefix

webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc

Index: webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc
diff --git a/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc b/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc
index 290df944bde45d5b9d5c3e96848f1b5f16203283..b71347e87e8f81e9d2b80441f28e20ee4b46d07d 100644
--- a/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc
+++ b/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc
@@ -52,8 +52,8 @@ bool ffmpeg_initialized = false;
 // Called by FFmpeg to do mutex operations if initialized using
 // |InitializeFFmpeg|. Disabling thread safety analysis because void** does not
 // play nicely with thread_annotations.h macros.
-int LockManagerOperation(void** lock, AVLockOp op)
-    NO_THREAD_SAFETY_ANALYSIS {
+int LockManagerOperation(void** lock,
+                         AVLockOp op) RTC_NO_THREAD_SAFETY_ANALYSIS {
   switch (op) {
     case AV_LOCK_CREATE:
       *lock = new rtc::CriticalSection();