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

device/bluetooth/dbus/bluetooth_gatt_characteristic_service_provider_impl.cc

 // 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.
 
 #include "device/bluetooth/dbus/bluetooth_gatt_characteristic_service_provider_impl.h"
 
 #include <cstddef>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 95 matching lines @@
 
 BluetoothGattCharacteristicServiceProviderImpl::
     ~BluetoothGattCharacteristicServiceProviderImpl() {
   VLOG(1) << "Cleaning up Bluetooth GATT characteristic: "
           << object_path_.value();
   if (bus_)
     bus_->UnregisterExportedObject(object_path_);
 }
 
 void BluetoothGattCharacteristicServiceProviderImpl::SendValueChanged(
-    const std::vector<uint8_t>& value) {
+    const dbus::ObjectPath& /* device_path */,
+    const std::vector<uint8_t>& value,
+    bool /* indicate */) {
   // Running a test, don't actually try to write to use DBus.
   if (!bus_)
     return;
 
   VLOG(2) << "Emitting a PropertiesChanged signal for characteristic value.";
   dbus::Signal signal(dbus::kDBusPropertiesInterface,
                       dbus::kDBusPropertiesChangedSignal);
   dbus::MessageWriter writer(&signal);
   dbus::MessageWriter array_writer(NULL);
   dbus::MessageWriter dict_entry_writer(NULL);
@@ skipping 288 matching lines @@
           method_call, kErrorFailed, "Failed to get/set characteristic value.");
   response_sender.Run(std::move(error_response));
 }
 
 const dbus::ObjectPath&
 BluetoothGattCharacteristicServiceProviderImpl::object_path() const {
   return object_path_;
 }
 
 }  // namespace bluez