bluetooth: Add optional 'name' support to MockBluetoothDevice.

device/bluetooth/test/mock_bluetooth_device.h

 // Copyright (c) 2012 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.
 
 #ifndef DEVICE_BLUETOOTH_TEST_MOCK_BLUETOOTH_DEVICE_H_
 #define DEVICE_BLUETOOTH_TEST_MOCK_BLUETOOTH_DEVICE_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 
 #include "base/memory/scoped_vector.h"
+#include "base/optional.h"
 #include "base/strings/string16.h"
 #include "device/bluetooth/bluetooth_common.h"
 #include "device/bluetooth/bluetooth_device.h"
 #include "device/bluetooth/bluetooth_uuid.h"
 #include "device/bluetooth/test/mock_bluetooth_gatt_service.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace device {
 
 class BluetoothRemoteGattService;
 class MockBluetoothAdapter;
 
 class MockBluetoothDevice : public BluetoothDevice {
  public:
   MockBluetoothDevice(MockBluetoothAdapter* adapter,
                       uint32_t bluetooth_class,
-                      const std::string& name,
+                      const char* name,
                       const std::string& address,
                       bool paired,
                       bool connected);
   virtual ~MockBluetoothDevice();
 
   MOCK_CONST_METHOD0(GetBluetoothClass, uint32_t());
   MOCK_CONST_METHOD0(GetType, BluetoothTransport());
   MOCK_CONST_METHOD0(GetIdentifier, std::string());
   MOCK_CONST_METHOD0(GetAddress, std::string());
   MOCK_CONST_METHOD0(GetVendorIDSource, BluetoothDevice::VendorIDSource());
@@ skipping 69 matching lines @@
   //                         &MockBluetoothDevice::GetMockServices));
   void AddMockService(std::unique_ptr<MockBluetoothGattService> mock_device);
   std::vector<BluetoothRemoteGattService*> GetMockServices() const;
   BluetoothRemoteGattService* GetMockService(
       const std::string& identifier) const;
 
   void SetConnected(bool connected) { connected_ = connected; }
 
  private:
   uint32_t bluetooth_class_;
-  std::string name_;
+  base::Optional<std::string> name_;
   std::string address_;
   BluetoothDevice::UUIDList uuids_;
   bool connected_;
 
   ScopedVector<MockBluetoothGattService> mock_services_;
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_TEST_MOCK_BLUETOOTH_DEVICE_H_