Rename the Custom Elements runtime feature to "CustomElements".

Source/core/css/CSSSelector.cpp

 /*
  * Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
  *               1999 Waldo Bastian (bastian@kde.org)
  *               2001 Andreas Schlapbach (schlpbch@iam.unibe.ch)
  *               2001-2003 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2002, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 413 matching lines @@
         nameToPseudoType->set(seamlessDocument.impl(), CSSSelector::PseudoSeamlessDocument);
         nameToPseudoType->set(distributed.impl(), CSSSelector::PseudoDistributed);
         nameToPseudoType->set(inRange.impl(), CSSSelector::PseudoInRange);
         nameToPseudoType->set(outOfRange.impl(), CSSSelector::PseudoOutOfRange);
         if (RuntimeEnabledFeatures::shadowDOMEnabled()) {
             nameToPseudoType->set(part.impl(), CSSSelector::PseudoPart);
             nameToPseudoType->set(host.impl(), CSSSelector::PseudoHost);
             nameToPseudoType->set(hostWithParams.impl(), CSSSelector::PseudoHost);
             nameToPseudoType->set(content.impl(), CSSSelector::PseudoContent);
         }
-        if (RuntimeEnabledFeatures::customDOMElementsEnabled())
+        if (RuntimeEnabledFeatures::customElementsEnabled())
             nameToPseudoType->set(unresolved.impl(), CSSSelector::PseudoUnresolved);
     }
     return nameToPseudoType;
 }
 
 CSSSelector::PseudoType CSSSelector::parsePseudoType(const AtomicString& name)
 {
     if (name.isNull())
         return PseudoUnknown;
     HashMap<StringImpl*, CSSSelector::PseudoType>* nameToPseudoType = nameToPseudoTypeMap();
@@ skipping 477 matching lines @@
             return false;
         return (count - m_b) % m_a == 0;
     } else {
         if (count > m_b)
             return false;
         return (m_b - count) % (-m_a) == 0;
     }
 }
 
 } // namespace WebCore