jni_generator: Pass object parameters as JavaParamRef.

content/app/android/content_main.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/content_main.h"
 
 #include "base/at_exit.h"
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
@@ skipping 10 matching lines @@
 
 namespace {
 LazyInstance<scoped_ptr<ContentMainRunner> > g_content_runner =
     LAZY_INSTANCE_INITIALIZER;
 
 LazyInstance<scoped_ptr<ContentMainDelegate> > g_content_main_delegate =
     LAZY_INSTANCE_INITIALIZER;
 
 }  // namespace
 
-static void InitApplicationContext(JNIEnv* env, jclass clazz, jobject context) {
+static void InitApplicationContext(JNIEnv* env,
+                                   const JavaParamRef<jclass>& clazz,
+                                   const JavaParamRef<jobject>& context) {
   base::android::ScopedJavaLocalRef<jobject> scoped_context(
       env, env->NewLocalRef(context));
   base::android::InitApplicationContext(env, scoped_context);
 }
 
-static jint Start(JNIEnv* env, jclass clazz) {
+static jint Start(JNIEnv* env, const JavaParamRef<jclass>& clazz) {
   TRACE_EVENT0("startup", "content::Start");
 
   // On Android we can have multiple requests to start the browser in process
   // simultaneously. If we get an asynchonous request followed by a synchronous
   // request then we have to call this a second time to finish starting the
   // browser synchronously.
   if (!g_content_runner.Get().get()) {
     ContentMainParams params(g_content_main_delegate.Get().get());
     g_content_runner.Get().reset(ContentMainRunner::Create());
     g_content_runner.Get()->Initialize(params);
   }
   return g_content_runner.Get()->Run();
 }
 
 void SetContentMainDelegate(ContentMainDelegate* delegate) {
   DCHECK(!g_content_main_delegate.Get().get());
   g_content_main_delegate.Get().reset(delegate);
 }
 
 bool RegisterContentMain(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace content