Revert of Rename thread annotation macros to have RTC prefix for syncrhonization primitives.

webrtc/rtc_base/criticalsection_unittest.cc

 /*
  *  Copyright 2014 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 95 matching lines @@
     }
     return false;
   }
 
   int threads_active_;
   Event start_event_;
   Event done_event_;
   int shared_value_;
 };
 
-class RTC_LOCKABLE CriticalSectionLock {
+class LOCKABLE CriticalSectionLock {
  public:
-  void Lock() RTC_EXCLUSIVE_LOCK_FUNCTION() { cs_.Enter(); }
-  void Unlock() RTC_UNLOCK_FUNCTION() { cs_.Leave(); }
+  void Lock() EXCLUSIVE_LOCK_FUNCTION() {
+    cs_.Enter();
+  }
+  void Unlock() UNLOCK_FUNCTION() {
+    cs_.Leave();
+  }
 
  private:
   CriticalSection cs_;
 };
 
 template <class Lock>
 class LockRunner : public RunnerBase {
  public:
   LockRunner() : RunnerBase(0) {}
 
@@ skipping 270 matching lines @@
   for (auto& t : threads)
     t.Start(&test_data, kThreadRepeats, 1);
 
   event.Wait(Event::kForever);
 
   for (auto& t : threads)
     t.Stop();
 }
 
 }  // namespace rtc