mash: Allow a subset of D-Bus clients to be created in DBusThreadManager

ash/common/system/chromeos/audio/tray_audio_chromeos.cc

Index: ash/common/system/chromeos/audio/tray_audio_chromeos.cc
diff --git a/ash/common/system/chromeos/audio/tray_audio_chromeos.cc b/ash/common/system/chromeos/audio/tray_audio_chromeos.cc
index 7bae4ce79ed93c8eba93f6d39b36439133aed402..11c1ea498799dfcf158c10edaa521c4140a2f845 100644
--- a/ash/common/system/chromeos/audio/tray_audio_chromeos.cc
+++ b/ash/common/system/chromeos/audio/tray_audio_chromeos.cc
@@ -4,11 +4,12 @@
 
 #include "ash/common/system/chromeos/audio/tray_audio_chromeos.h"
 
+#include "ash/common/dbus_thread_manager_ash.h"
 #include "ash/common/system/audio/volume_view.h"
 #include "ash/common/system/chromeos/audio/audio_detailed_view.h"
 #include "ash/common/system/chromeos/audio/tray_audio_delegate_chromeos.h"
 #include "ash/common/wm_shell.h"
-#include "chromeos/dbus/dbus_thread_manager.h"
+// #include "chromeos/dbus/dbus_thread_manager.h"
 #include "ui/views/view.h"
 
 namespace ash {
@@ -21,13 +22,11 @@ TrayAudioChromeOs::TrayAudioChromeOs(SystemTray* system_tray)
           system_tray,
           std::unique_ptr<TrayAudioDelegate>(new TrayAudioDelegateChromeOs())),
       audio_detail_view_(NULL) {
-  chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->AddObserver(
-      this);
+  DBusThreadManagerAsh::Get()->GetPowerManagerClient()->AddObserver(this);
 }
 
 TrayAudioChromeOs::~TrayAudioChromeOs() {
-  chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->RemoveObserver(
-      this);
+  DBusThreadManagerAsh::Get()->GetPowerManagerClient()->RemoveObserver(this);
 }
 
 void TrayAudioChromeOs::Update() {