Add missing using statements for JNI types.

device/bluetooth/bluetooth_remote_gatt_service_android.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/bluetooth_remote_gatt_service_android.h"
 
 #include <memory>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "device/bluetooth/bluetooth_adapter_android.h"
 #include "device/bluetooth/bluetooth_device_android.h"
 #include "device/bluetooth/bluetooth_remote_gatt_characteristic_android.h"
 #include "jni/ChromeBluetoothRemoteGattService_jni.h"
 
 using base::android::AttachCurrentThread;
+using base::android::JavaParamRef;
 
 namespace device {
 
 // static
 std::unique_ptr<BluetoothRemoteGattServiceAndroid>
 BluetoothRemoteGattServiceAndroid::Create(
     BluetoothAdapterAndroid* adapter,
     BluetoothDeviceAndroid* device,
     jobject /* BluetoothGattServiceWrapper */ bluetooth_gatt_service_wrapper,
     const std::string& instance_id,
@@ skipping 154 matching lines @@
 void BluetoothRemoteGattServiceAndroid::EnsureCharacteristicsCreated() const {
   if (!characteristics_.empty())
     return;
 
   // Java call
   Java_ChromeBluetoothRemoteGattService_createCharacteristics(
       AttachCurrentThread(), j_service_.obj());
 }
 
 }  // namespace device