Move media/audio files into media namespace

media/audio/linux/alsa_wrapper.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/audio/linux/alsa_wrapper.h"
 
 #include <alsa/asoundlib.h>
 
+namespace media {
+
 AlsaWrapper::AlsaWrapper() {
 }
 
 AlsaWrapper::~AlsaWrapper() {
 }
 
 int AlsaWrapper::PcmOpen(snd_pcm_t** handle, const char* name,
                          snd_pcm_stream_t stream, int mode) {
   return snd_pcm_open(handle, name, stream, mode);
 }
@@ skipping 200 matching lines @@
 }
 
 int AlsaWrapper::MixerSelemHasCaptureVolume(snd_mixer_elem_t* elem) {
   return snd_mixer_selem_has_capture_volume(elem);
 }
 
 int AlsaWrapper::MixerSelemGetCaptureVolumeRange(snd_mixer_elem_t* elem,
                                                  long* min, long* max) {
   return snd_mixer_selem_get_capture_volume_range(elem, min, max);
 }
+
+}  // namespace media