jni_generator: Pass object parameters as JavaParamRef.

android_webview/native/aw_message_port_service_impl.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 "android_webview/native/aw_message_port_service_impl.h"
 
 #include "android_webview/browser/aw_browser_context.h"
 #include "android_webview/browser/aw_message_port_message_filter.h"
 #include "android_webview/native/aw_contents.h"
 #include "base/android/jni_array.h"
@@ skipping 213 matching lines @@
     return;
   }
   ports_[message_port_id] = filter;
 }
 
 bool RegisterAwMessagePortService(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 // static
-jlong InitAwMessagePortService(JNIEnv* env, jobject obj) {
+jlong InitAwMessagePortService(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   AwMessagePortServiceImpl* service = AwMessagePortServiceImpl::GetInstance();
   service->Init(env, obj);
   return reinterpret_cast<intptr_t>(service);
 }
 
 }  // namespace android_webview