bluetooth: Make public BluetoothDevice::GetName method.

device/bluetooth/bluez/bluetooth_device_bluez.cc

Index: device/bluetooth/bluez/bluetooth_device_bluez.cc
diff --git a/device/bluetooth/bluez/bluetooth_device_bluez.cc b/device/bluetooth/bluez/bluetooth_device_bluez.cc
index 3cb677ce08d1335789cadb5c16558408537c4448..15617f25d09624414d9759c5350e1839679fc9e9 100644
--- a/device/bluetooth/bluez/bluetooth_device_bluez.cc
+++ b/device/bluetooth/bluez/bluetooth_device_bluez.cc
@@ -214,15 +214,6 @@ device::BluetoothTransport BluetoothDeviceBlueZ::GetType() const {
   return device::BLUETOOTH_TRANSPORT_INVALID;
 }
 
-std::string BluetoothDeviceBlueZ::GetDeviceName() const {
-  bluez::BluetoothDeviceClient::Properties* properties =
-      bluez::BluezDBusManager::Get()->GetBluetoothDeviceClient()->GetProperties(
-          object_path_);
-  DCHECK(properties);
-
-  return properties->alias.value();
-}
-
 void BluetoothDeviceBlueZ::CreateGattConnectionImpl() {
   // BlueZ implementation does not use the default CreateGattConnection
   // implementation.
@@ -293,6 +284,17 @@ uint16_t BluetoothDeviceBlueZ::GetAppearance() const {
   return properties->appearance.value();
 }
 
+base::Optional<std::string> BluetoothDeviceBlueZ::GetName() const {
+  bluez::BluetoothDeviceClient::Properties* properties =
+      bluez::BluezDBusManager::Get()->GetBluetoothDeviceClient()->GetProperties(
+          object_path_);
+  DCHECK(properties);
+
+  if (properties->name.is_valid())
+    return base::Optional<std::string>(properties->name.value());
+  return base::Optional<std::string>();
+}
+
 bool BluetoothDeviceBlueZ::IsPaired() const {
   bluez::BluetoothDeviceClient::Properties* properties =
       bluez::BluezDBusManager::Get()->GetBluetoothDeviceClient()->GetProperties(