Replaced CriticalSectionWrapper with rtc::CriticalSection in rtp_rtcp module

webrtc/modules/rtp_rtcp/source/tmmbr_help.h

 /*
  *  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.
  */
 
 #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_TMMBR_HELP_H_
 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_TMMBR_HELP_H_
 
 #include <vector>
+#include "webrtc/base/criticalsection.h"
 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/tmmb_item.h"
-#include "webrtc/system_wrappers/include/critical_section_wrapper.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
 class TMMBRSet : public std::vector<rtcp::TmmbItem>
 {
 public:
     void VerifyAndAllocateSet(uint32_t minimumSize);
     void VerifyAndAllocateSetKeepingData(uint32_t minimumSize);
     // Number of valid data items in set.
     uint32_t lengthOfSet() const { return size(); }
@@ skipping 46 matching lines @@
 
     bool CalcMinBitRate(uint32_t* minBitrateKbit) const;
 
 protected:
     TMMBRSet*   VerifyAndAllocateBoundingSet(uint32_t minimumSize);
     int32_t VerifyAndAllocateBoundingSetToSend(uint32_t minimumSize);
 
     int32_t FindTMMBRBoundingSet(int32_t numCandidates, TMMBRSet& candidateSet);
 
 private:
-    CriticalSectionWrapper* _criticalSection;
+    rtc::CriticalSection    _criticalSection;
     TMMBRSet                _candidateSet;
     TMMBRSet                _boundingSet;
     TMMBRSet                _boundingSetToSend;
 
     float*                  _ptrIntersectionBoundingSet;
     float*                  _ptrMaxPRBoundingSet;
 };
 }  // namespace webrtc
 
 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_TMMBR_HELP_H_