Swap use of CriticalSectionWrapper with rtc::CriticalSection in voice_engine/

webrtc/voice_engine/voe_external_media_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.
  */
 
 #include "webrtc/voice_engine/voe_external_media_impl.h"
 
-#include "webrtc/system_wrappers/include/critical_section_wrapper.h"
 #include "webrtc/system_wrappers/include/trace.h"
 #include "webrtc/voice_engine/channel.h"
 #include "webrtc/voice_engine/include/voe_errors.h"
 #include "webrtc/voice_engine/output_mixer.h"
 #include "webrtc/voice_engine/transmit_mixer.h"
 #include "webrtc/voice_engine/voice_engine_impl.h"
 
 namespace webrtc {
 
 VoEExternalMedia* VoEExternalMedia::GetInterface(VoiceEngine* voiceEngine) {
@@ skipping 147 matching lines @@
     shared_->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
                           "SetExternalMixing() failed to locate channel");
     return -1;
   }
   return channelPtr->SetExternalMixing(enable);
 }
 
 #endif  // WEBRTC_VOICE_ENGINE_EXTERNAL_MEDIA_API
 
 }  // namespace webrtc