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

chrome/browser/ui/android/chrome_http_auth_handler.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 "chrome/browser/ui/android/chrome_http_auth_handler.h"
 
 #include <jni.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 44 matching lines @@
   ScopedJavaLocalRef<jstring> j_username =
       ConvertUTF16ToJavaString(env, username);
   ScopedJavaLocalRef<jstring> j_password =
       ConvertUTF16ToJavaString(env, password);
   Java_ChromeHttpAuthHandler_onAutofillDataAvailable(
       env, java_chrome_http_auth_handler_.obj(),
       j_username.obj(), j_password.obj());
 }
 
 void ChromeHttpAuthHandler::SetAuth(JNIEnv* env,
-                                    jobject,
-                                    jstring username,
-                                    jstring password) {
+                                    const JavaParamRef<jobject>&,
+                                    const JavaParamRef<jstring>& username,
+                                    const JavaParamRef<jstring>& password) {
   if (observer_) {
     base::string16 username16 = ConvertJavaStringToUTF16(env, username);
     base::string16 password16 = ConvertJavaStringToUTF16(env, password);
     observer_->SetAuth(username16, password16);
   }
 }
 
-void ChromeHttpAuthHandler::CancelAuth(JNIEnv* env, jobject) {
+void ChromeHttpAuthHandler::CancelAuth(JNIEnv* env,
+                                       const JavaParamRef<jobject>&) {
   if (observer_)
     observer_->CancelAuth();
 }
 
 ScopedJavaLocalRef<jstring> ChromeHttpAuthHandler::GetMessageBody(
-    JNIEnv* env, jobject) {
+    JNIEnv* env,
+    const JavaParamRef<jobject>&) {
   return ConvertUTF16ToJavaString(env, explanation_);
 }
 
 // static
 bool ChromeHttpAuthHandler::RegisterChromeHttpAuthHandler(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }