LinkedStack.h is no longer used, remove it

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 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 15 matching lines @@
 #include "core/CoreExport.h"
 #include "core/css/CSSKeyframesRule.h"
 #include "core/css/MediaQueryEvaluator.h"
 #include "core/css/RuleFeature.h"
 #include "core/css/StyleRule.h"
 #include "core/css/resolver/MediaQueryResult.h"
 #include "platform/heap/HeapLinkedStack.h"
 #include "platform/heap/HeapTerminatedArray.h"
 #include "wtf/Forward.h"
 #include "wtf/HashMap.h"
-#include "wtf/LinkedStack.h"
 #include "wtf/TerminatedArray.h"
 
 namespace blink {
 
 enum AddRuleFlags {
   RuleHasNoSpecialState = 0,
   RuleHasDocumentSecurityOrigin = 1,
 };
 
 enum PropertyWhitelistType {
@@ skipping 266 matching lines @@
   Member<PendingRuleMaps> m_pendingRules;
 
 #ifndef NDEBUG
   HeapVector<RuleData> m_allRules;
 #endif
 };
 
 }  // namespace blink
 
 #endif  // RuleSet_h