jni_generator: Pass object parameters as JavaParamRef.

chrome/browser/prerender/external_prerender_handler_android.cc

 // Copyright 2013 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 "chrome/browser/prerender/external_prerender_handler_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 51 matching lines @@
 
 void ExternalPrerenderHandlerAndroid::CancelCurrentPrerender(JNIEnv* env,
                                                              jobject object) {
   if (!prerender_handle_)
     return;
   prerender_handle_->OnCancel();
   prerender_handle_.reset();
 }
 
 static jboolean HasPrerenderedUrl(JNIEnv* env,
-                                  jclass clazz,
-                                  jobject jprofile,
-                                  jstring jurl,
-                                  jobject jweb_contents) {
+                                  const JavaParamRef<jclass>& clazz,
+                                  const JavaParamRef<jobject>& jprofile,
+                                  const JavaParamRef<jstring>& jurl,
+                                  const JavaParamRef<jobject>& jweb_contents) {
   if (jurl == NULL)
     return false;
 
   Profile* profile = ProfileAndroid::FromProfileAndroid(jprofile);
   GURL url = GURL(ConvertJavaStringToUTF16(env, jurl));
   if (!url.is_valid())
     return false;
   prerender::PrerenderManager* prerender_manager =
           prerender::PrerenderManagerFactory::GetForProfile(profile);
   if (!prerender_manager)
     return false;
   content::WebContents* web_contents =
       content::WebContents::FromJavaWebContents(jweb_contents);
   return prerender_manager->HasPrerenderedUrl(url, web_contents);
 }
 
 ExternalPrerenderHandlerAndroid::ExternalPrerenderHandlerAndroid() {}
 
 ExternalPrerenderHandlerAndroid::~ExternalPrerenderHandlerAndroid() {}
 
-static jlong Init(JNIEnv* env, jclass clazz) {
+static jlong Init(JNIEnv* env, const JavaParamRef<jclass>& clazz) {
   ExternalPrerenderHandlerAndroid* external_handler =
       new ExternalPrerenderHandlerAndroid();
   return reinterpret_cast<intptr_t>(external_handler);
 }
 
 bool ExternalPrerenderHandlerAndroid::RegisterExternalPrerenderHandlerAndroid(
     JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 } // namespace prerender