Switch CriticalSectionWrapper->rtc::CriticalSection in modules/audio_coding.

webrtc/modules/audio_coding/codecs/isac/locked_bandwidth_info.h

 /*
  *  Copyright (c) 2015 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.
  */
 
 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_LOCKED_BANDWIDTH_INFO_H_
 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_LOCKED_BANDWIDTH_INFO_H_
 
+#include "webrtc/base/criticalsection.h"
 #include "webrtc/base/scoped_ptr.h"
 #include "webrtc/base/thread_annotations.h"
 #include "webrtc/modules/audio_coding/codecs/isac/bandwidth_info.h"
-#include "webrtc/system_wrappers/include/critical_section_wrapper.h"
 
 namespace webrtc {
 
 // An IsacBandwidthInfo that's safe to access from multiple threads because
 // it's protected by a mutex.
 class LockedIsacBandwidthInfo final {
  public:
   LockedIsacBandwidthInfo();
   ~LockedIsacBandwidthInfo();
 
   IsacBandwidthInfo Get() const {
-    CriticalSectionScoped cs(lock_.get());
+    rtc::CritScope lock(&lock_);
     return bwinfo_;
   }
 
   void Set(const IsacBandwidthInfo& bwinfo) {
-    CriticalSectionScoped cs(lock_.get());
+    rtc::CritScope lock(&lock_);
     bwinfo_ = bwinfo;
   }
 
  private:
-  const rtc::scoped_ptr<CriticalSectionWrapper> lock_;
+  mutable rtc::CriticalSection lock_;
   IsacBandwidthInfo bwinfo_ GUARDED_BY(lock_);
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_LOCKED_BANDWIDTH_INFO_H_