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

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

 /*
  *  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.
  */
 
 #include "webrtc/voice_engine/test/auto_test/fakes/loudest_filter.h"
 
 #include "webrtc/base/checks.h"
 
+namespace webrtc {
 namespace voetest {
 
 void LoudestFilter::RemoveTimeoutStreams(int64_t time_ms) {
   auto it = stream_levels_.begin();
   while (it != stream_levels_.end()) {
     if (rtc::TimeDiff(time_ms, it->second.last_time_ms) > kStreamTimeOutMs) {
       stream_levels_.erase(it++);
     } else {
       ++it;
     }
@@ skipping 46 matching lines @@
   // A smaller value if audio level corresponds to a louder sound.
   if (audio_level < stream_levels_[quietest_ssrc].audio_level) {
     stream_levels_.erase(quietest_ssrc);
     stream_levels_[source_ssrc].Set(audio_level, time_now_ms);
     return true;
   }
   return false;
 }
 
 }  // namespace voetest
-
+}  // namespace webrtc