Add support in Chrome to send notifications to a specific device.

device/bluetooth/dbus/bluetooth_gatt_characteristic_service_provider_impl.h

 // Copyright 2016 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_DBUS_BLUETOOTH_GATT_CHARACTERISTIC_SERVICE_PROVIDER_IMPL_H_
 #define DEVICE_BLUETOOTH_DBUS_BLUETOOTH_GATT_CHARACTERISTIC_SERVICE_PROVIDER_IMPL_H_
 
 #include <stdint.h>
 #include <string>
 #include <vector>
@@ skipping 21 matching lines @@
       dbus::Bus* bus,
       const dbus::ObjectPath& object_path,
       std::unique_ptr<BluetoothGattAttributeValueDelegate> delegate,
       const std::string& uuid,
       const std::vector<std::string>& flags,
       const dbus::ObjectPath& service_path);
 
   ~BluetoothGattCharacteristicServiceProviderImpl() override;
 
   // BluetoothGattCharacteristicServiceProvider override.
-  void SendValueChanged(const std::vector<uint8_t>& value) override;
+  void SendValueChanged(const dbus::ObjectPath& device_path,
+                        const std::vector<uint8_t>& value,
+                        bool indicate) override;
 
  private:
   // Returns true if the current thread is on the origin thread.
   bool OnOriginThread();
 
   // Called by dbus:: when the Bluetooth daemon fetches a single property of
   // the characteristic.
   void Get(dbus::MethodCall* method_call,
            dbus::ExportedObject::ResponseSender response_sender);
 
@@ skipping 95 matching lines @@
   // invalidate its weak pointers before any other members are destroyed.
   base::WeakPtrFactory<BluetoothGattCharacteristicServiceProviderImpl>
       weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothGattCharacteristicServiceProviderImpl);
 };
 
 }  // namespace bluez
 
 #endif  // DEVICE_BLUETOOTH_DBUS_BLUETOOTH_GATT_CHARACTERISTIC_SERVICE_PROVIDER_IMPL_H_