Remove MediaQuerySet:createOffMainThread.

third_party/WebKit/Source/core/css/MediaList.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2006, 2008, 2009, 2010, 2012 Apple Inc. All rights
  * reserved.
  *
  * 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.
  *
@@ skipping 24 matching lines @@
 class CSSRule;
 class CSSStyleSheet;
 class ExceptionState;
 class MediaList;
 class MediaQuery;
 
 class CORE_EXPORT MediaQuerySet : public GarbageCollected<MediaQuerySet> {
  public:
   static MediaQuerySet* create() { return new MediaQuerySet(); }
   static MediaQuerySet* create(const String& mediaString);
-  static MediaQuerySet* createOffMainThread(const String& mediaString);
 
   bool set(const String&);
   bool add(const String&);
   bool remove(const String&);
 
   void addMediaQuery(MediaQuery*);
 
   const HeapVector<Member<MediaQuery>>& queryVector() const {
     return m_queries;
   }
@@ skipping 51 matching lines @@
   // Cleared in ~CSSStyleSheet destructor when oilpan is not enabled.
   Member<CSSStyleSheet> m_parentStyleSheet;
   // Cleared in the ~CSSMediaRule and ~CSSImportRule destructors when oilpan is
   // not enabled.
   Member<CSSRule> m_parentRule;
 };
 
 }  // namespace blink
 
 #endif