Pass JavaRef to Java methods in device/bluetooth.

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;
+using base::android::JavaRef;
 
 namespace device {
 
 // static
 std::unique_ptr<BluetoothRemoteGattServiceAndroid>
 BluetoothRemoteGattServiceAndroid::Create(
     BluetoothAdapterAndroid* adapter,
     BluetoothDeviceAndroid* device,
-    jobject /* BluetoothGattServiceWrapper */ bluetooth_gatt_service_wrapper,
+    const JavaRef<jobject>&
+        bluetooth_gatt_service_wrapper,  // BluetoothGattServiceWrapper
     const std::string& instance_id,
-    jobject /* ChromeBluetoothDevice */ chrome_bluetooth_device) {
+    const JavaRef<jobject>& chrome_bluetooth_device) {  // ChromeBluetoothDevice
   std::unique_ptr<BluetoothRemoteGattServiceAndroid> service(
       new BluetoothRemoteGattServiceAndroid(adapter, device, instance_id));
 
   JNIEnv* env = AttachCurrentThread();
   service->j_service_.Reset(Java_ChromeBluetoothRemoteGattService_create(
       env, reinterpret_cast<intptr_t>(service.get()),
       bluetooth_gatt_service_wrapper,
       base::android::ConvertUTF8ToJavaString(env, instance_id),
       chrome_bluetooth_device));
 
@@ skipping 143 matching lines @@
 void BluetoothRemoteGattServiceAndroid::EnsureCharacteristicsCreated() const {
   if (!characteristics_.empty())
     return;
 
   // Java call
   Java_ChromeBluetoothRemoteGattService_createCharacteristics(
       AttachCurrentThread(), j_service_);
 }
 
 }  // namespace device