Implement GetAudioOutputDevices for remaining platforms, consolidate tests.

media/audio/linux/audio_manager_linux.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/audio_manager_linux.h"
 
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
@@ skipping 85 matching lines @@
 
 AudioManagerLinux::~AudioManagerLinux() {
   Shutdown();
 }
 
 void AudioManagerLinux::ShowAudioInputSettings() {
   ShowLinuxAudioInputSettings();
 }
 
 void AudioManagerLinux::GetAudioInputDeviceNames(
-    media::AudioDeviceNames* device_names) {
+    AudioDeviceNames* device_names) {
   DCHECK(device_names->empty());
   GetAlsaAudioDevices(kStreamCapture, device_names);
 }
 
 void AudioManagerLinux::GetAudioOutputDeviceNames(
-    media::AudioDeviceNames* device_names) {
+    AudioDeviceNames* device_names) {
   DCHECK(device_names->empty());
   GetAlsaAudioDevices(kStreamPlayback, device_names);
 }
 
 AudioParameters AudioManagerLinux::GetInputStreamParameters(
     const std::string& device_id) {
   static const int kDefaultInputBufferSize = 1024;
 
   return AudioParameters(
       AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_STEREO,
@@ skipping 257 matching lines @@
     UMA_HISTOGRAM_ENUMERATION("Media.LinuxAudioIO", kPulse, kAudioIOMax);
     return manager;
   }
 #endif
 
   UMA_HISTOGRAM_ENUMERATION("Media.LinuxAudioIO", kAlsa, kAudioIOMax);
   return new AudioManagerLinux();
 }
 
 }  // namespace media