Update thread annotiation macros in rtc_base to use RTC_ prefix

webrtc/rtc_base/sequenced_task_checker.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 36 matching lines @@
 //     RTC_DCHECK(sequence_checker_.CalledSequentially());
 //     ... (do stuff) ...
 //   }
 //
 //  private:
 //   SequencedTaskChecker sequence_checker_;
 // }
 //
 // In Release mode, CalledOnValidThread will always return true.
 #if ENABLE_SEQUENCED_TASK_CHECKER
-class LOCKABLE SequencedTaskChecker : public SequencedTaskCheckerImpl {};
+class RTC_LOCKABLE SequencedTaskChecker : public SequencedTaskCheckerImpl {};
 #else
-class LOCKABLE SequencedTaskChecker : public SequencedTaskCheckerDoNothing {};
+class RTC_LOCKABLE SequencedTaskChecker : public SequencedTaskCheckerDoNothing {
+};
 #endif  // ENABLE_SEQUENCED_TASK_CHECKER_H_
 
 namespace internal {
-class SCOPED_LOCKABLE SequencedTaskCheckerScope {
+class RTC_SCOPED_LOCKABLE SequencedTaskCheckerScope {
  public:
   explicit SequencedTaskCheckerScope(const SequencedTaskChecker* checker)
-      EXCLUSIVE_LOCK_FUNCTION(checker);
-  ~SequencedTaskCheckerScope() UNLOCK_FUNCTION();
+      RTC_EXCLUSIVE_LOCK_FUNCTION(checker);
+  ~SequencedTaskCheckerScope() RTC_UNLOCK_FUNCTION();
 };
 
 }  // namespace internal
 
 #define RTC_DCHECK_CALLED_SEQUENTIALLY(x) \
   rtc::internal::SequencedTaskCheckerScope checker(x)
 
 #undef ENABLE_SEQUENCED_TASK_CHECKER
 
 }  // namespace rtc
 #endif  // WEBRTC_RTC_BASE_SEQUENCED_TASK_CHECKER_H_