bluetooth: Make public BluetoothDevice::GetName method.

device/bluetooth/test/mock_bluetooth_device.h

Index: device/bluetooth/test/mock_bluetooth_device.h
diff --git a/device/bluetooth/test/mock_bluetooth_device.h b/device/bluetooth/test/mock_bluetooth_device.h
index 43fb402bb516ef7a59b759975dde378029561bca..e464ac20204dc3ba618c281779d85f402fa018cb 100644
--- a/device/bluetooth/test/mock_bluetooth_device.h
+++ b/device/bluetooth/test/mock_bluetooth_device.h
@@ -42,6 +42,7 @@ class MockBluetoothDevice : public BluetoothDevice {
   MOCK_CONST_METHOD0(GetProductID, uint16_t());
   MOCK_CONST_METHOD0(GetDeviceID, uint16_t());
   MOCK_CONST_METHOD0(GetAppearance, uint16_t());
+  MOCK_CONST_METHOD0(GetName, base::Optional<std::string>());
   MOCK_CONST_METHOD0(GetNameForDisplay, base::string16());
   MOCK_CONST_METHOD0(GetDeviceType, BluetoothDevice::DeviceType());
   MOCK_CONST_METHOD0(IsPaired, bool());
@@ -96,7 +97,6 @@ class MockBluetoothDevice : public BluetoothDevice {
                      std::vector<BluetoothRemoteGattService*>());
   MOCK_CONST_METHOD1(GetGattService,
                      BluetoothRemoteGattService*(const std::string&));
-  MOCK_CONST_METHOD0(GetDeviceName, std::string());
   MOCK_METHOD0(CreateGattConnectionImpl, void());
   MOCK_METHOD0(DisconnectGatt, void());