jni_generator: Pass object parameters as JavaParamRef.

content/app/android/child_process_service.cc

 // Copyright (c) 2012 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 "content/app/android/child_process_service.h"
 
 #include <android/native_window_jni.h>
 #include <cpu-features.h>
 
 #include "base/android/jni_array.h"
@@ skipping 131 matching lines @@
   // Set the CPU properties.
   android_setCpu(cpu_count, cpu_features);
   SurfaceTextureManager::SetInstance(new SurfaceTextureManagerImpl(service));
 
   base::android::MemoryPressureListenerAndroid::RegisterSystemCallback(env);
 }
 
 }  // namespace <anonymous>
 
 void RegisterGlobalFileDescriptor(JNIEnv* env,
-                                  jclass clazz,
+                                  const JavaParamRef<jclass>& clazz,
                                   jint id,
                                   jint fd,
                                   jlong offset,
                                   jlong size) {
   base::MemoryMappedFile::Region region = {offset, size};
   base::GlobalDescriptors::GetInstance()->Set(id, fd, region);
 }
 
 void InitChildProcess(JNIEnv* env,
-                      jclass clazz,
-                      jobject service,
+                      const JavaParamRef<jclass>& clazz,
+                      const JavaParamRef<jobject>& service,
                       jint cpu_count,
                       jlong cpu_features) {
   InternalInitChildProcess(env, clazz, service, cpu_count, cpu_features);
 }
 
-void ExitChildProcess(JNIEnv* env, jclass clazz) {
+void ExitChildProcess(JNIEnv* env, const JavaParamRef<jclass>& clazz) {
   VLOG(0) << "ChildProcessService: Exiting child process.";
   base::android::LibraryLoaderExitHook();
   _exit(0);
 }
 
 bool RegisterChildProcessService(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
-void ShutdownMainThread(JNIEnv* env, jobject obj) {
+void ShutdownMainThread(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   ChildThreadImpl::ShutdownThread();
 }
 
 }  // namespace content