H264: Don't disable compiler warning by using NO_THREAD_SAFETY_ANALYSIS.

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 a28a841994885fa0935e765f44781d0b41a1660b..290df944bde45d5b9d5c3e96848f1b5f16203283 100644
--- a/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc
+++ b/webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.cc
@@ -50,9 +50,10 @@ rtc::CriticalSection ffmpeg_init_lock;
 bool ffmpeg_initialized = false;
 
 // Called by FFmpeg to do mutex operations if initialized using
-// |InitializeFFmpeg|.
+// |InitializeFFmpeg|. Disabling thread safety analysis because void** does not
+// play nicely with thread_annotations.h macros.
 int LockManagerOperation(void** lock, AVLockOp op)
-    EXCLUSIVE_LOCK_FUNCTION() UNLOCK_FUNCTION() {
+    NO_THREAD_SAFETY_ANALYSIS {
   switch (op) {
     case AV_LOCK_CREATE:
       *lock = new rtc::CriticalSection();