Add missing using statements for JNI types.

device/bluetooth/bluetooth_remote_gatt_characteristic_android.cc

 // Copyright 2015 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_characteristic_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_adapter_android.h"
 #include "device/bluetooth/bluetooth_gatt_notify_session_android.h"
 #include "device/bluetooth/bluetooth_remote_gatt_descriptor_android.h"
 #include "device/bluetooth/bluetooth_remote_gatt_service_android.h"
 #include "jni/ChromeBluetoothRemoteGattCharacteristic_jni.h"
 
 using base::android::AttachCurrentThread;
+using base::android::JavaParamRef;
 
 namespace device {
 
 // static
 std::unique_ptr<BluetoothRemoteGattCharacteristicAndroid>
 BluetoothRemoteGattCharacteristicAndroid::Create(
     BluetoothAdapterAndroid* adapter,
     BluetoothRemoteGattServiceAndroid* service,
     const std::string& instance_id,
     jobject /* BluetoothGattCharacteristicWrapper */
@@ skipping 309 matching lines @@
 void BluetoothRemoteGattCharacteristicAndroid::EnsureDescriptorsCreated()
     const {
   if (!descriptors_.empty())
     return;
 
   Java_ChromeBluetoothRemoteGattCharacteristic_createDescriptors(
       AttachCurrentThread(), j_characteristic_.obj());
 }
 
 }  // namespace device