Remove the AudioManager singleton.

content/browser/renderer_host/media/audio_input_device_manager.cc

 // Copyright (c) 2011 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 "content/browser/renderer_host/media/audio_input_device_manager.h"
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/renderer_host/media/audio_input_device_manager_event_handler.h"
 #include "content/public/browser/browser_thread.h"
 #include "media/audio/audio_manager_base.h"
 
 using content::BrowserThread;
 
 namespace media_stream {
 
 const int AudioInputDeviceManager::kFakeOpenSessionId = 1;
 const int AudioInputDeviceManager::kInvalidSessionId = 0;
 const char AudioInputDeviceManager::kInvalidDeviceId[] = "";
 
 // Starting id for the first capture session.
 const int kFirstSessionId = AudioInputDeviceManager::kFakeOpenSessionId + 1;
 
-AudioInputDeviceManager::AudioInputDeviceManager()
+AudioInputDeviceManager::AudioInputDeviceManager(AudioManager* audio_manager)
     : listener_(NULL),
-      next_capture_session_id_(kFirstSessionId) {
+      next_capture_session_id_(kFirstSessionId),
+      audio_manager_(audio_manager) {
 }
 
 AudioInputDeviceManager::~AudioInputDeviceManager() {
 }
 
 void AudioInputDeviceManager::Register(MediaStreamProviderListener* listener) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   DCHECK(!listener_);
   listener_ = listener;
 }
 
 void AudioInputDeviceManager::Unregister() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   DCHECK(listener_);
   listener_ = NULL;
 }
 
 void AudioInputDeviceManager::EnumerateDevices() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   DCHECK(listener_);
 
   media::AudioDeviceNames device_names;
-  AudioManager::GetAudioManager()->GetAudioInputDeviceNames(&device_names);
+  audio_manager_->GetAudioInputDeviceNames(&device_names);
 
   StreamDeviceInfoArray* devices = new StreamDeviceInfoArray;
   for (media::AudioDeviceNames::iterator it = device_names.begin();
        it != device_names.end();
        ++it) {
     devices->push_back(StreamDeviceInfo(kAudioCapture, it->device_name,
                                         it->unique_id, false));
   }
 
   // Returns the device list through the listener by posting a task on
@@ skipping 107 matching lines @@
     listener_->Opened(kAudioCapture, session_id);
 }
 
 void AudioInputDeviceManager::ClosedOnIOThread(int session_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   if (listener_)
     listener_->Closed(kAudioCapture, session_id);
 }
 
 }  // namespace media_stream