jni: Pass method parameters as JavaParamRef in chrome/browser/ui.

chrome/browser/ui/android/infobars/generated_password_saved_infobar.cc

 // Copyright 2014 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/ui/android/infobars/generated_password_saved_infobar.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 24 matching lines @@
   return Java_GeneratedPasswordSavedInfoBarDelegate_show(
       env, GetEnumeratedIconId(),
       base::android::ConvertUTF16ToJavaString(
           env, infobar_delegate->message_text()).obj(),
       infobar_delegate->inline_link_range().start(),
       infobar_delegate->inline_link_range().end(),
       base::android::ConvertUTF16ToJavaString(
           env, infobar_delegate->button_label()).obj());
 }
 
-void GeneratedPasswordSavedInfoBar::OnLinkClicked(JNIEnv* env, jobject obj) {
+void GeneratedPasswordSavedInfoBar::OnLinkClicked(
+    JNIEnv* env,
+    const JavaParamRef<jobject>& obj) {
   if (!owner())
     return;
 
   static_cast<GeneratedPasswordSavedInfoBarDelegateAndroid*>(delegate())
       ->OnInlineLinkClicked();
   RemoveSelf();
 }
 
 void GeneratedPasswordSavedInfoBar::ProcessButton(int action) {
   if (!owner())
     return;
 
   RemoveSelf();
 }
 
 bool RegisterGeneratedPasswordSavedInfoBarDelegate(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }