Implement 'window.isSecureContext'.

third_party/WebKit/Source/modules/notifications/Notification.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 62 matching lines @@
         return nullptr;
     }
 
     // The Web Notification constructor may not be used in Service Worker contexts.
     if (context->isServiceWorkerGlobalScope()) {
         exceptionState.throwTypeError("Illegal constructor.");
         return nullptr;
     }
 
     String insecureOriginMessage;
-    UseCounter::Feature feature = context->isPrivilegedContext(insecureOriginMessage)
+    UseCounter::Feature feature = context->isSecureContext(insecureOriginMessage)
         ? UseCounter::NotificationSecureOrigin
         : UseCounter::NotificationInsecureOrigin;
 
     UseCounter::count(context, feature);
 
     WebNotificationData data = createWebNotificationData(context, title, options, exceptionState);
     if (exceptionState.hadException())
         return nullptr;
 
     Notification* notification = new Notification(context, data);
@@ skipping 264 matching lines @@
     return m_state == NotificationStateShowing || m_asyncRunner.isActive();
 }
 
 DEFINE_TRACE(Notification)
 {
     RefCountedGarbageCollectedEventTargetWithInlineData<Notification>::trace(visitor);
     ActiveDOMObject::trace(visitor);
 }
 
 } // namespace blink