Update thread annotiation macros in rtc_base to use RTC_ prefix

webrtc/rtc_base/race_checker.h

Index: webrtc/rtc_base/race_checker.h
diff --git a/webrtc/rtc_base/race_checker.h b/webrtc/rtc_base/race_checker.h
index b49db534e37724e4fad57299eebfd0033828b6f7..f0506c8437ca46cd1c0c03201c076a8e452b0167 100644
--- a/webrtc/rtc_base/race_checker.h
+++ b/webrtc/rtc_base/race_checker.h
@@ -23,14 +23,14 @@ class RaceCheckerScope;
 
 // Best-effort race-checking implementation. This primitive uses no
 // synchronization at all to be as-fast-as-possible in the non-racy case.
-class LOCKABLE RaceChecker {
+class RTC_LOCKABLE RaceChecker {
  public:
   friend class internal::RaceCheckerScope;
   RaceChecker();
 
  private:
-  bool Acquire() const EXCLUSIVE_LOCK_FUNCTION();
-  void Release() const UNLOCK_FUNCTION();
+  bool Acquire() const RTC_EXCLUSIVE_LOCK_FUNCTION();
+  void Release() const RTC_UNLOCK_FUNCTION();
 
   // Volatile to prevent code being optimized away in Acquire()/Release().
   mutable volatile int access_count_ = 0;
@@ -38,25 +38,25 @@ class LOCKABLE RaceChecker {
 };
 
 namespace internal {
-class SCOPED_LOCKABLE RaceCheckerScope {
+class RTC_SCOPED_LOCKABLE RaceCheckerScope {
  public:
   explicit RaceCheckerScope(const RaceChecker* race_checker)
-      EXCLUSIVE_LOCK_FUNCTION(race_checker);
+      RTC_EXCLUSIVE_LOCK_FUNCTION(race_checker);
 
   bool RaceDetected() const;
-  ~RaceCheckerScope() UNLOCK_FUNCTION();
+  ~RaceCheckerScope() RTC_UNLOCK_FUNCTION();
 
  private:
   const RaceChecker* const race_checker_;
   const bool race_check_ok_;
 };
 
-class SCOPED_LOCKABLE RaceCheckerScopeDoNothing {
+class RTC_SCOPED_LOCKABLE RaceCheckerScopeDoNothing {
  public:
   explicit RaceCheckerScopeDoNothing(const RaceChecker* race_checker)
-      EXCLUSIVE_LOCK_FUNCTION(race_checker) {}
+      RTC_EXCLUSIVE_LOCK_FUNCTION(race_checker) {}
 
-  ~RaceCheckerScopeDoNothing() UNLOCK_FUNCTION() {}
+  ~RaceCheckerScopeDoNothing() RTC_UNLOCK_FUNCTION() {}
 };
 
 }  // namespace internal