Move StylePropertySet::createImmutable() to ImmutableStylePropertySet.

Source/core/css/CSSParser.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
@@ skipping 1387 matching lines @@
     size_t unusedEntries = m_parsedProperties.size();
     Vector<CSSProperty, 256> results(unusedEntries);
 
     // Important properties have higher priority, so add them first. Duplicate definitions can then be ignored when found.
     HashSet<AtomicString> seenVariables;
     filterProperties(true, m_parsedProperties, results, unusedEntries, seenProperties, seenVariables);
     filterProperties(false, m_parsedProperties, results, unusedEntries, seenProperties, seenVariables);
     if (unusedEntries)
         results.remove(0, unusedEntries);
 
-    return StylePropertySet::createImmutable(results.data(), results.size(), m_context.mode);
+    return ImmutableStylePropertySet::create(results.data(), results.size(), m_context.mode);
 }
 
 void CSSParser::addPropertyWithPrefixingVariant(CSSPropertyID propId, PassRefPtr<CSSValue> value, bool important, bool implicit)
 {
     RefPtr<CSSValue> val = value.get();
     addProperty(propId, value, important, implicit);
 
     CSSPropertyID prefixingVariant = prefixingVariantForPropertyId(propId);
     if (prefixingVariant == propId)
         return;
@@ skipping 10318 matching lines @@
 {
     // The tokenizer checks for the construct of an+b.
     // However, since the {ident} rule precedes the {nth} rule, some of those
     // tokens are identified as string literal. Furthermore we need to accept
     // "odd" and "even" which does not match to an+b.
     return equalIgnoringCase(token, "odd") || equalIgnoringCase(token, "even")
         || equalIgnoringCase(token, "n") || equalIgnoringCase(token, "-n");
 }
 
 }