Expose MediaQueryList interface and make arguments non-optional

Source/core/css/MediaQueryList.cpp

 /*
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Library General Public
  *  License as published by the Free Software Foundation; either
  *  version 2 of the License, or (at your option) any later version.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 42 matching lines @@
 #endif
 }
 
 String MediaQueryList::media() const
 {
     return m_media->mediaText();
 }
 
 void MediaQueryList::addDeprecatedListener(PassRefPtr<EventListener> listener)
 {
+    if (!listener)
+        return;
+
     addEventListener(EventTypeNames::change, listener, false);
 }
 
 void MediaQueryList::removeDeprecatedListener(PassRefPtr<EventListener> listener)
 {
+    if (!listener)
+        return;
+
     removeEventListener(EventTypeNames::change, listener, false);
 }
 
 void MediaQueryList::addListener(PassRefPtrWillBeRawPtr<MediaQueryListListener> listener)
 {
     if (!listener)
         return;
 
     m_listeners.add(listener);
 }
@@ skipping 61 matching lines @@
 {
     return EventTargetNames::MediaQueryList;
 }
 
 ExecutionContext* MediaQueryList::executionContext() const
 {
     return ActiveDOMObject::executionContext();
 }
 
 }