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

chrome/browser/ui/android/autofill/card_unmask_prompt_view_android.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_ANDROID_AUTOFILL_CARD_UNMASK_PROMPT_VIEW_ANDROID_H_
 #define CHROME_BROWSER_UI_ANDROID_AUTOFILL_CARD_UNMASK_PROMPT_VIEW_ANDROID_H_
 
 #include <jni.h>
 
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/strings/string16.h"
 #include "components/autofill/core/browser/ui/card_unmask_prompt_view.h"
 
 namespace content {
 class WebContents;
 }
 
 namespace autofill {
 
 class CardUnmaskPromptViewAndroid : public CardUnmaskPromptView {
  public:
   explicit CardUnmaskPromptViewAndroid(CardUnmaskPromptController* controller,
                                        content::WebContents* web_contents);
 
-  bool CheckUserInputValidity(JNIEnv* env, jobject obj, jstring response);
+  bool CheckUserInputValidity(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& obj,
+      const base::android::JavaParamRef<jstring>& response);
   void OnUserInput(JNIEnv* env,
-                   jobject obj,
-                   jstring cvc,
-                   jstring month,
-                   jstring year,
+                   const base::android::JavaParamRef<jobject>& obj,
+                   const base::android::JavaParamRef<jstring>& cvc,
+                   const base::android::JavaParamRef<jstring>& month,
+                   const base::android::JavaParamRef<jstring>& year,
                    jboolean should_store_locally);
-  void OnNewCardLinkClicked(JNIEnv* env, jobject obj);
-  void PromptDismissed(JNIEnv* env, jobject obj);
+  void OnNewCardLinkClicked(JNIEnv* env,
+                            const base::android::JavaParamRef<jobject>& obj);
+  void PromptDismissed(JNIEnv* env,
+                       const base::android::JavaParamRef<jobject>& obj);
 
   // CardUnmaskPromptView implementation.
   void Show() override;
   void ControllerGone() override;
   void DisableAndWaitForVerification() override;
   void GotVerificationResult(const base::string16& error_message,
                              bool allow_retry) override;
 
   static bool Register(JNIEnv* env);
 
  private:
   ~CardUnmaskPromptViewAndroid() override;
 
   // The corresponding java object.
   base::android::ScopedJavaGlobalRef<jobject> java_object_;
 
   CardUnmaskPromptController* controller_;
   content::WebContents* web_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(CardUnmaskPromptViewAndroid);
 };
 
 }  // namespace autofill
 
 #endif  // CHROME_BROWSER_UI_ANDROID_AUTOFILL_CARD_UNMASK_PROMPT_VIEW_ANDROID_H_