Revert of "Create rtc::AtomicInt POD struct."

webrtc/system_wrappers/source/trace_impl.cc

 /*
  *  Copyright (c) 2012 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 16 matching lines @@
 
 #ifdef _WIN32
 #pragma warning(disable:4355)
 #endif  // _WIN32
 
 namespace webrtc {
 
 const int Trace::kBoilerplateLength = 71;
 const int Trace::kTimestampPosition = 13;
 const int Trace::kTimestampLength = 12;
-rtc::AtomicInt Trace::level_filter_ = {kTraceDefault};
+volatile int Trace::level_filter_ = kTraceDefault;
 
 // Construct On First Use idiom. Avoids "static initialization order fiasco".
 TraceImpl* TraceImpl::StaticInstance(CountOperation count_operation,
                                      const TraceLevel level) {
   // Sanities to avoid taking lock unless absolutely necessary (for
   // performance reasons). count_operation == kAddRefNoCreate implies that a
   // message will be written to file.
   if ((level != kTraceAll) && (count_operation == kAddRefNoCreate)) {
     if (!(level & level_filter())) {
       return NULL;
@@ skipping 493 matching lines @@
   if (trace) {
     int ret_val = trace->TraceFileImpl(file_name);
     ReturnTrace();
     return ret_val;
   }
   return -1;
 }
 
 // static
 void Trace::set_level_filter(int filter) {
-  rtc::AtomicInt::ReleaseStore(&level_filter_, filter);
+  rtc::AtomicOps::ReleaseStore(&level_filter_, filter);
 }
 
 // static
 int Trace::level_filter() {
-  return rtc::AtomicInt::AcquireLoad(&level_filter_);
+  return rtc::AtomicOps::AcquireLoad(&level_filter_);
 }
 
 // static
 int32_t Trace::SetTraceFile(const char* file_name,
                             const bool add_file_counter) {
   TraceImpl* trace = TraceImpl::GetTrace();
   if (trace) {
     int ret_val = trace->SetTraceFileImpl(file_name, add_file_counter);
     ReturnTrace();
     return ret_val;
@@ skipping 29 matching lines @@
         va_end(args);
         buff = temp_buff;
       }
       trace->AddImpl(level, module, id, buff);
     }
     ReturnTrace();
   }
 }
 
 }  // namespace webrtc