Pass JavaRef to Java methods in device/bluetooth.

device/bluetooth/bluetooth_remote_gatt_descriptor_android.h

 // 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.
 
 #ifndef DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_DESCRIPTOR_ANDROID_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_DESCRIPTOR_ANDROID_H_
 
 #include <memory>
 
 #include "base/android/jni_android.h"
+#include "base/android/scoped_java_ref.h"
 #include "base/macros.h"
 #include "device/bluetooth/bluetooth_remote_gatt_characteristic.h"
 #include "device/bluetooth/bluetooth_remote_gatt_descriptor.h"
 
 namespace device {
 
 // BluetoothRemoteGattDescriptorAndroid along with its owned Java class
 // org.chromium.device.bluetooth.ChromeBluetoothRemoteGattDescriptor
 // implement BluetootGattDescriptor.
 class DEVICE_BLUETOOTH_EXPORT BluetoothRemoteGattDescriptorAndroid
     : public BluetoothRemoteGattDescriptor {
  public:
   // Create a BluetoothRemoteGattDescriptorAndroid instance and associated
   // Java ChromeBluetoothRemoteGattDescriptor using the provided
   // |bluetooth_gatt_descriptor_wrapper|.
   //
   // The ChromeBluetoothRemoteGattDescriptor instance will hold a Java
   // reference to |bluetooth_gatt_descriptor_wrapper|.
   static std::unique_ptr<BluetoothRemoteGattDescriptorAndroid> Create(
       const std::string& instanceId,
-      jobject /* BluetoothGattDescriptorWrapper */
+      const base::android::JavaRef<jobject>& /* BluetoothGattDescriptorWrapper
+                                                */
       bluetooth_gatt_descriptor_wrapper,
-      jobject /* chromeBluetoothDevice */ chrome_bluetooth_device);
+      const base::android::JavaRef<
+          jobject>& /* chromeBluetoothDevice */ chrome_bluetooth_device);
 
   ~BluetoothRemoteGattDescriptorAndroid() override;
 
   // Register C++ methods exposed to Java using JNI.
   static bool RegisterJNI(JNIEnv* env);
 
   // Returns the associated ChromeBluetoothRemoteGattDescriptor Java object.
   base::android::ScopedJavaLocalRef<jobject> GetJavaObject();
 
   // BluetoothRemoteGattDescriptor interface:
@@ skipping 41 matching lines @@
   ErrorCallback write_error_callback_;
 
   std::vector<uint8_t> value_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothRemoteGattDescriptorAndroid);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_DESCRIPTOR_ANDROID_H_