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

chrome/browser/ui/android/autofill/password_generation_popup_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_PASSWORD_GENERATION_POPUP_VIEW_ANDROID_H_
 #define CHROME_BROWSER_UI_ANDROID_AUTOFILL_PASSWORD_GENERATION_POPUP_VIEW_ANDROID_H_
 
 #include <jni.h>
 
 #include "base/android/scoped_java_ref.h"
 #include "base/compiler_specific.h"
 #include "chrome/browser/ui/autofill/password_generation_popup_view.h"
 
 namespace autofill {
 
 class PasswordGenerationPopupController;
 
 // The android implementation of the password generation UI.
 class PasswordGenerationPopupViewAndroid : public PasswordGenerationPopupView {
  public:
   // Builds the UI for the |controller|.
   explicit PasswordGenerationPopupViewAndroid(
       PasswordGenerationPopupController* controller);
 
   // Called from JNI when the "saved passwords" link was clicked.
-  void SavedPasswordsLinkClicked(JNIEnv* env, jobject obj);
+  void SavedPasswordsLinkClicked(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& obj);
 
   // Called from JNI when the popup was dismissed.
-  void Dismissed(JNIEnv* env, jobject obj);
+  void Dismissed(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
 
   // Called from JNI when the suggested password was selected.
-  void PasswordSelected(JNIEnv* env, jobject object);
+  void PasswordSelected(JNIEnv* env,
+                        const base::android::JavaParamRef<jobject>& object);
 
   // Registers the popup with JNI.
   static bool Register(JNIEnv* env);
 
  private:
   // The popup owns itself.
   virtual ~PasswordGenerationPopupViewAndroid();
 
   // PasswordGenerationPopupView implementation.
   void Show() override;
   void Hide() override;
   gfx::Size GetPreferredSizeOfPasswordView() override;
   void UpdateBoundsAndRedrawPopup() override;
   void PasswordSelectionUpdated() override;
   bool IsPointInPasswordBounds(const gfx::Point& point) override;
 
   // Weak pointer to the controller.
   PasswordGenerationPopupController* controller_;
 
   // The corresponding java object.
   base::android::ScopedJavaGlobalRef<jobject> java_object_;
 
   DISALLOW_COPY_AND_ASSIGN(PasswordGenerationPopupViewAndroid);
 };
 
 }  // namespace autofill
 
 #endif  // CHROME_BROWSER_UI_ANDROID_AUTOFILL_PASSWORD_GENERATION_POPUP_VIEW_ANDROID_H_