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

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

 // 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.
 
 #ifndef CHROME_BROWSER_UI_ANDROID_AUTOFILL_AUTOFILL_POPUP_VIEW_ANDROID_H_
 #define CHROME_BROWSER_UI_ANDROID_AUTOFILL_AUTOFILL_POPUP_VIEW_ANDROID_H_
 
 #include <jni.h>
 
 #include "base/android/scoped_java_ref.h"
 #include "base/compiler_specific.h"
 #include "chrome/browser/ui/autofill/autofill_popup_view.h"
 
 namespace gfx {
 class Rect;
 }
 
 namespace autofill {
 
 class AutofillPopupController;
 
 class AutofillPopupViewAndroid : public AutofillPopupView {
  public:
   explicit AutofillPopupViewAndroid(AutofillPopupController* controller);
 
   // --------------------------------------------------------------------------
   // Methods called from Java via JNI
   // --------------------------------------------------------------------------
   // Called when an autofill item was selected.
-  void SuggestionSelected(JNIEnv* env, jobject obj, jint list_index);
+  void SuggestionSelected(JNIEnv* env,
+                          const base::android::JavaParamRef<jobject>& obj,
+                          jint list_index);
 
-  void DeletionRequested(JNIEnv* env, jobject obj, jint list_index);
+  void DeletionRequested(JNIEnv* env,
+                         const base::android::JavaParamRef<jobject>& obj,
+                         jint list_index);
 
-  void DeletionConfirmed(JNIEnv* env, jobject obj);
+  void DeletionConfirmed(JNIEnv* env,
+                         const base::android::JavaParamRef<jobject>& obj);
 
-  void PopupDismissed(JNIEnv* env, jobject obj);
+  void PopupDismissed(JNIEnv* env,
+                      const base::android::JavaParamRef<jobject>& obj);
 
   static bool RegisterAutofillPopupViewAndroid(JNIEnv* env);
 
  protected:
   // AutofillPopupView implementation.
   void Show() override;
   void Hide() override;
   void InvalidateRow(size_t row) override;
   void UpdateBoundsAndRedrawPopup() override;
 
  private:
   ~AutofillPopupViewAndroid() override;
 
   AutofillPopupController* controller_;  // weak.
 
   // The index of the last item the user long-pressed (they will be shown a
   // confirmation dialog).
   int deleting_index_;
 
   // The corresponding java object.
   base::android::ScopedJavaGlobalRef<jobject> java_object_;
 
   DISALLOW_COPY_AND_ASSIGN(AutofillPopupViewAndroid);
 };
 
 }  // namespace autofill
 
 #endif  // CHROME_BROWSER_UI_ANDROID_AUTOFILL_AUTOFILL_POPUP_VIEW_ANDROID_H_