Remove ConditionVariableWrapper.

webrtc/system_wrappers/source/condition_variable.cc

-/*
- *  Copyright (c) 2011 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.
- */
-
-#include "webrtc/system_wrappers/include/condition_variable_wrapper.h"
-
-// TODO(tommi): Remove completely.  As is there is still some code for Windows
-// that relies on ConditionVariableWrapper, but code has been removed on other
-// platforms.
-#if defined(WEBRTC_WIN)
-
-#include <windows.h>
-#include "webrtc/system_wrappers/source/condition_variable_event_win.h"
-#include "webrtc/system_wrappers/source/condition_variable_native_win.h"
-
-namespace webrtc {
-ConditionVariableWrapper* ConditionVariableWrapper::CreateConditionVariable() {
-  // Try to create native condition variable implementation.
-  ConditionVariableWrapper* ret_val = ConditionVariableNativeWin::Create();
-  if (!ret_val) {
-    // Native condition variable implementation does not exist. Create generic
-    // condition variable based on events.
-    ret_val = new ConditionVariableEventWin();
-  }
-  return ret_val;
-}
-}  // namespace webrtc
-
-#endif  // defined(WEBRTC_WIN)