Add missing using statements for JNI types.

device/bluetooth/bluetooth_remote_gatt_descriptor_android.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/bluetooth_remote_gatt_descriptor_android.h"
 
 #include <memory>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "device/bluetooth/bluetooth_gatt_notify_session_android.h"
 #include "device/bluetooth/bluetooth_remote_gatt_service_android.h"
 #include "jni/ChromeBluetoothRemoteGattDescriptor_jni.h"
 
 using base::android::AttachCurrentThread;
+using base::android::JavaParamRef;
 
 namespace device {
 
 // static
 std::unique_ptr<BluetoothRemoteGattDescriptorAndroid>
 BluetoothRemoteGattDescriptorAndroid::Create(
     const std::string& instance_id,
     jobject /* BluetoothGattDescriptorWrapper */
     bluetooth_gatt_descriptor_wrapper,
     jobject /* chromeBluetoothDevice */
@@ skipping 149 matching lines @@
     write_error_callback.Run(
         BluetoothRemoteGattServiceAndroid::GetGattErrorCode(status));
   }
 }
 
 BluetoothRemoteGattDescriptorAndroid::BluetoothRemoteGattDescriptorAndroid(
     const std::string& instance_id)
     : instance_id_(instance_id) {}
 
 }  // namespace device