Remove ConditionVariableWrapper.

webrtc/system_wrappers/source/condition_variable_event_win.h

 /*
  *  Copyright (c) 2013 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_SYSTEM_WRAPPERS_SOURCE_CONDITION_VARIABLE_EVENT_WIN_H_
 #define WEBRTC_SYSTEM_WRAPPERS_SOURCE_CONDITION_VARIABLE_EVENT_WIN_H_
 
 #include <windows.h>
 
-#include "webrtc/system_wrappers/include/condition_variable_wrapper.h"
-
 namespace webrtc {
 
-class ConditionVariableEventWin : public ConditionVariableWrapper {
+class ConditionVariableEventWin {
  public:
   ConditionVariableEventWin();
-  virtual ~ConditionVariableEventWin();
+  ~ConditionVariableEventWin();
 
-  void SleepCS(CriticalSectionWrapper& crit_sect);
-  bool SleepCS(CriticalSectionWrapper& crit_sect, unsigned long max_time_inMS);
+  void SleepCS(CRITICAL_SECTION* crit_sect);
+  bool SleepCS(CRITICAL_SECTION* crit_sect, unsigned long max_time_inMS);
   void Wake();
   void WakeAll();
 
  private:
   enum EventWakeUpType {
     WAKEALL_0   = 0,
     WAKEALL_1   = 1,
     WAKE        = 2,
     EVENT_COUNT = 3
   };
 
   unsigned int     num_waiters_[2];
   EventWakeUpType  eventID_;
   CRITICAL_SECTION num_waiters_crit_sect_;
   HANDLE           events_[EVENT_COUNT];
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_SYSTEM_WRAPPERS_SOURCE_CONDITION_VARIABLE_EVENT_WIN_H_