Simple lint fixes

webrtc/pc/audiomonitor.cc

 /*
  *  Copyright 2004 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 83 matching lines @@
 }
 
 VoiceChannel *AudioMonitor::voice_channel() {
   return voice_channel_;
 }
 
 rtc::Thread *AudioMonitor::monitor_thread() {
   return monitoring_thread_;
 }
 
-}
+}  // namespace cricket