Add a feature to display a persistence toggle for permission prompts on Android.

chrome/browser/notifications/notification_permission_infobar_delegate.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_NOTIFICATIONS_NOTIFICATION_PERMISSION_INFOBAR_DELEGATE_H_
 #define CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_PERMISSION_INFOBAR_DELEGATE_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "chrome/browser/permissions/permission_infobar_delegate.h"
 
+class InfoBarService;
+
 class NotificationPermissionInfobarDelegate : public PermissionInfobarDelegate {
  public:
   // Creates a Notification permission infobar and delegate and adds the
   // infobar to |infobar_service|.  Returns the infobar if it was successfully
   // added.
   static infobars::InfoBar* Create(InfoBarService* infobar_service,
                                    const GURL& requesting_frame,
                                    bool user_gesture,
                                    Profile* profile,
                                    const PermissionSetCallback& callback);
 
  private:
   NotificationPermissionInfobarDelegate(const GURL& requesting_frame,
                                         bool user_gesture,
                                         Profile* profile,
                                         const PermissionSetCallback& callback);
   ~NotificationPermissionInfobarDelegate() override;
 
   // PermissionInfoBarDelegate:
   infobars::InfoBarDelegate::InfoBarIdentifier GetIdentifier() const override;
   int GetIconId() const override;
   int GetMessageResourceId() const override;
 
   GURL requesting_frame_;
 
   DISALLOW_COPY_AND_ASSIGN(NotificationPermissionInfobarDelegate);
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_PERMISSION_INFOBAR_DELEGATE_H_