Don't make a top-level namespace called "voetest"

webrtc/voice_engine/test/auto_test/fakes/loudest_filter.h

 /*
  *  Copyright (c) 2015 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_VOICE_ENGINE_TEST_AUTO_TEST_FAKES_LOUDEST_FILTER_H_
 #define WEBRTC_VOICE_ENGINE_TEST_AUTO_TEST_FAKES_LOUDEST_FILTER_H_
 
 #include <map>
 #include "webrtc/base/timeutils.h"
 #include "webrtc/common_types.h"
 
+namespace webrtc {
 namespace voetest {
 
 class LoudestFilter {
  public:
   /* ForwardThisPacket()
    * Decide whether to forward a RTP packet, given its header.
    *
    * Input:
    *   rtp_header : Header of the RTP packet of interest.
    */
@@ skipping 13 matching lines @@
   unsigned int FindQuietestStream();
 
   // Keeps the streams being forwarded in pair<SSRC, Status>.
   std::map<unsigned int, Status> stream_levels_;
 
   const int32_t kStreamTimeOutMs = 5000;
   const size_t kMaxMixSize = 3;
   const int kInvalidAudioLevel = 128;
 };
 
-
 }  // namespace voetest
+}  // namespace webrtc
 
 #endif  // WEBRTC_VOICE_ENGINE_TEST_AUTO_TEST_FAKES_LOUDEST_FILTER_H_