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

device/bluetooth/dbus/bluetooth_gatt_application_service_provider.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_application_service_provider.h"
 
 #include <string>
 #include <utility>
 
 #include "base/memory/ptr_util.h"
@@ skipping 118 matching lines @@
                     service.second, descriptor.get())),
                 descriptor->GetUUID().value(),
                 FlagsFromPermissions(descriptor->GetPermissions()),
                 characteristic.second->object_path())));
       }
     }
   }
 }
 
 void BluetoothGattApplicationServiceProvider::SendValueChanged(
+    const dbus::ObjectPath& device_path,
     const dbus::ObjectPath& characteristic_path,
-    const std::vector<uint8_t>& value) {
+    const std::vector<uint8_t>& value,
+    bool indicate) {
   auto characteristic = std::find_if(
       characteristic_providers_.begin(), characteristic_providers_.end(),
       [&](const std::unique_ptr<BluetoothGattCharacteristicServiceProvider>&
               p) { return p->object_path() == characteristic_path; });
   if (characteristic == characteristic_providers_.end()) {
     LOG(ERROR) << "Couldn't find characteristic provider for: "
                << characteristic_path.value();
     return;
   }
-  characteristic->get()->SendValueChanged(value);
+  characteristic->get()->SendValueChanged(device_path, value, indicate);
 }
 
 // static
 std::unique_ptr<BluetoothGattApplicationServiceProvider>
 BluetoothGattApplicationServiceProvider::Create(
     dbus::Bus* bus,
     const dbus::ObjectPath& object_path,
     const std::map<dbus::ObjectPath, BluetoothLocalGattServiceBlueZ*>&
         services) {
   if (!bluez::BluezDBusManager::Get()->IsUsingFakes()) {
     return base::WrapUnique(new BluetoothGattApplicationServiceProviderImpl(
         bus, object_path, services));
   }
   return base::WrapUnique(
       new FakeBluetoothGattApplicationServiceProvider(object_path, services));
 }
 
 }  // namespace bluez