remove more CriticalSectionWrappers.

webrtc/voice_engine/file_recorder.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.
  */
 
@@ skipping 14 matching lines @@
 
 namespace webrtc {
 
 namespace {
 
 // The largest decoded frame size in samples (60ms with 32kHz sample rate).
 enum { MAX_AUDIO_BUFFER_IN_SAMPLES = 60 * 32 };
 enum { MAX_AUDIO_BUFFER_IN_BYTES = MAX_AUDIO_BUFFER_IN_SAMPLES * 2 };
 enum { kMaxAudioBufferQueueLength = 100 };
 
-class CriticalSectionWrapper;
-
 class FileRecorderImpl : public FileRecorder {
  public:
   FileRecorderImpl(uint32_t instanceID, FileFormats fileFormat);
   ~FileRecorderImpl() override;
 
   // FileRecorder functions.
   int32_t RegisterModuleFileCallback(FileCallback* callback) override;
   FileFormats RecordingFileFormat() const override;
   int32_t StartRecordingAudioFile(const char* fileName,
                                   const CodecInst& codecInst,
@@ skipping 206 matching lines @@
 }  // namespace
 
 std::unique_ptr<FileRecorder> FileRecorder::CreateFileRecorder(
     uint32_t instanceID,
     FileFormats fileFormat) {
   return std::unique_ptr<FileRecorder>(
       new FileRecorderImpl(instanceID, fileFormat));
 }
 
 }  // namespace webrtc