Make CSSParserMode parameter not optional for MutableStylePropertySet::create()

Source/core/css/DOMWindowCSS.cpp

 /*
  * Copyright (C) 2012 Motorola Mobility Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above
@@ skipping 31 matching lines @@
 namespace blink {
 
 bool DOMWindowCSS::supports(const String& property, const String& value)
 {
     CSSPropertyID unresolvedProperty = unresolvedCSSPropertyID(property);
     if (unresolvedProperty == CSSPropertyInvalid)
         return false;
     ASSERT(CSSPropertyMetadata::isEnabledProperty(unresolvedProperty));
 
     // This will return false when !important is present
-    RefPtrWillBeRawPtr<MutableStylePropertySet> dummyStyle = MutableStylePropertySet::create();
+    RefPtrWillBeRawPtr<MutableStylePropertySet> dummyStyle = MutableStylePropertySet::create(HTMLQuirksMode);
     return CSSParser::parseValue(dummyStyle.get(), unresolvedProperty, value, false, HTMLStandardMode, 0);
 }
 
 bool DOMWindowCSS::supports(const String& conditionText)
 {
     return CSSParser::parseSupportsCondition(conditionText);
 }
 
 String DOMWindowCSS::escape(const String& ident, ExceptionState& exceptionState)
 {
     StringBuilder builder;
     if (!serializeIdentifier(ident, builder)) {
         exceptionState.throwDOMException(InvalidCharacterError, "The string contains an invalid character.");
         return String();
     }
     return builder.toString();
 }
 
 }