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

device/bluetooth/dbus/bluetooth_gatt_characteristic_service_provider.h

 // Copyright 2014 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_H_
 #define DEVICE_BLUETOOTH_DBUS_BLUETOOTH_GATT_CHARACTERISTIC_SERVICE_PROVIDER_H_
 
 #include <stdint.h>
 #include <string>
 #include <vector>
@@ skipping 20 matching lines @@
 // property are delegated to the Delegate object, an instance of which is
 // mandatory during initialization. In addition, a "SendValueChanged" method is
 // provided, which emits a DBus.Properties.PropertyChanged signal for the
 // "Value" property.
 class DEVICE_BLUETOOTH_EXPORT BluetoothGattCharacteristicServiceProvider {
  public:
   virtual ~BluetoothGattCharacteristicServiceProvider();
 
   // Send a PropertyChanged signal to notify the Bluetooth daemon that the value
   // of the "Value" property has changed to |value|.
-  virtual void SendValueChanged(const std::vector<uint8_t>& value) = 0;
+  virtual void SendValueChanged(const dbus::ObjectPath& device_path,
+                                const std::vector<uint8_t>& value,
+                                bool indicate) = 0;
 
   // Writes the characteristics's properties into the provided writer. If
   // value is not null, it is written also, otherwise no value property is
   // written.
   virtual void WriteProperties(dbus::MessageWriter* writer) {}
 
   virtual const dbus::ObjectPath& object_path() const = 0;
 
   // Creates the instance, where |bus| is the D-Bus bus connection to export
   // the object onto, |uuid| is the 128-bit GATT characteristic UUID,
@@ skipping 20 matching lines @@
  protected:
   BluetoothGattCharacteristicServiceProvider();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BluetoothGattCharacteristicServiceProvider);
 };
 
 }  // namespace bluez
 
 #endif  // DEVICE_BLUETOOTH_DBUS_BLUETOOTH_GATT_CHARACTERISTIC_SERVICE_PROVIDER_H_