Refactor DBusThreadManager to split away BT clients.

device/bluetooth/bluetooth_gatt_notify_session_chromeos.cc

Index: device/bluetooth/bluetooth_gatt_notify_session_chromeos.cc
diff --git a/device/bluetooth/bluetooth_gatt_notify_session_chromeos.cc b/device/bluetooth/bluetooth_gatt_notify_session_chromeos.cc
index ba7b84314e1b3e82a976f1143f725d98c1621f3a..02f7ed8bbbe37f09af1694dc505fb6c0fc0a0bb3 100644
--- a/device/bluetooth/bluetooth_gatt_notify_session_chromeos.cc
+++ b/device/bluetooth/bluetooth_gatt_notify_session_chromeos.cc
@@ -6,11 +6,11 @@
 
 #include "base/bind.h"
 #include "base/logging.h"
-#include "chromeos/dbus/dbus_thread_manager.h"
 #include "device/bluetooth/bluetooth_adapter.h"
 #include "device/bluetooth/bluetooth_device.h"
 #include "device/bluetooth/bluetooth_gatt_service.h"
 #include "device/bluetooth/bluetooth_remote_gatt_characteristic_chromeos.h"
+#include "device/bluetooth/dbus/bluez_dbus_manager.h"
 
 namespace chromeos {
 
@@ -32,12 +32,13 @@ BluetoothGattNotifySessionChromeOS::BluetoothGattNotifySessionChromeOS(
   DCHECK(!characteristic_id_.empty());
   DCHECK(object_path_.IsValid());
 
-  DBusThreadManager::Get()->GetBluetoothGattCharacteristicClient()->AddObserver(
-      this);
+  bluez::BluezDBusManager::Get()
+      ->GetBluetoothGattCharacteristicClient()
+      ->AddObserver(this);
 }
 
 BluetoothGattNotifySessionChromeOS::~BluetoothGattNotifySessionChromeOS() {
-  DBusThreadManager::Get()
+  bluez::BluezDBusManager::Get()
       ->GetBluetoothGattCharacteristicClient()
       ->RemoveObserver(this);
   Stop(base::Bind(&base::DoNothing));
@@ -58,11 +59,12 @@ bool BluetoothGattNotifySessionChromeOS::IsActive() {
   // actually active, since the characteristic might have stopped sending
   // notifications yet this method was called before we processed the
   // observer event (e.g. because somebody else called this method in their
-  // BluetoothGattCharacteristicClient::Observer implementation, which was
+  // bluez::BluetoothGattCharacteristicClient::Observer implementation, which
+  // was
   // called before ours). Check the client to see if notifications are still
   // being sent.
-  BluetoothGattCharacteristicClient::Properties* properties =
-      DBusThreadManager::Get()
+  bluez::BluetoothGattCharacteristicClient::Properties* properties =
+      bluez::BluezDBusManager::Get()
           ->GetBluetoothGattCharacteristicClient()
           ->GetProperties(object_path_);
   if (!properties || !properties->notifying.value())
@@ -115,8 +117,8 @@ void BluetoothGattNotifySessionChromeOS::GattCharacteristicPropertyChanged(
   if (!active_)
     return;
 
-  BluetoothGattCharacteristicClient::Properties* properties =
-      DBusThreadManager::Get()
+  bluez::BluetoothGattCharacteristicClient::Properties* properties =
+      bluez::BluezDBusManager::Get()
           ->GetBluetoothGattCharacteristicClient()
           ->GetProperties(object_path_);
   if (!properties) {