Implement BluetoothGattNotifySession::Stop on Android, 2nd attempt

device/bluetooth/test/mock_bluetooth_gatt_notify_session.cc

 // 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.
 
 #include "device/bluetooth/test/mock_bluetooth_gatt_notify_session.h"
 #include "device/bluetooth/test/mock_bluetooth_adapter.h"
 #include "device/bluetooth/test/mock_bluetooth_gatt_characteristic.h"
 
 using testing::Return;
 
 namespace device {
 
 MockBluetoothGattNotifySession::MockBluetoothGattNotifySession(
-    const std::string& characteristic_identifier) {
-  ON_CALL(*this, GetCharacteristicIdentifier())
-      .WillByDefault(Return(characteristic_identifier));
+    base::WeakPtr<BluetoothRemoteGattCharacteristic> characteristic)
+    : BluetoothGattNotifySession(characteristic) {
   ON_CALL(*this, IsActive()).WillByDefault(Return(true));
 }
 
 MockBluetoothGattNotifySession::~MockBluetoothGattNotifySession() {
 }
 
 void MockBluetoothGattNotifySession::StartTestNotifications(
     MockBluetoothAdapter* adapter,
     MockBluetoothGattCharacteristic* characteristic,
     const std::vector<uint8_t>& value) {
@@ skipping 13 matching lines @@
 void MockBluetoothGattNotifySession::DoNotify(
     MockBluetoothAdapter* adapter,
     MockBluetoothGattCharacteristic* characteristic,
     const std::vector<uint8_t>& value) {
   FOR_EACH_OBSERVER(
       BluetoothAdapter::Observer, adapter->GetObservers(),
       GattCharacteristicValueChanged(adapter, characteristic, value));
 }
 
 }  // namespace device