Fix serialization of content property to always quote

Source/core/css/parser/CSSParserValues.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2008 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 159 matching lines @@
         case StringToken:
         case UnicodeRangeToken:
         case UrlToken: {
             CSSParserString string;
             string.init(token.value());
             value.id = CSSValueInvalid;
             value.isInt = false;
             if (token.type() == HashToken)
                 value.unit = CSSParserValue::HexColor;
             else if (token.type() == StringToken)
-                value.unit = CSSPrimitiveValue::CSS_STRING;
+                value.unit = CSSPrimitiveValue::CSS_CUSTOM_IDENT;

[Timothy Loh, 2015/03/03 23:20:15]

These should also stay as <string>

             else if (token.type() == UnicodeRangeToken)
                 value.unit = CSSPrimitiveValue::CSS_UNICODE_RANGE;
             else
                 value.unit = CSSPrimitiveValue::CSS_URI;
             value.string = string;
             break;
         }
         case DelimiterToken:
             value.setFromOperator(token.delimiter());
             if (calcDepth && token.delimiter() == '+' && (&token - 1)->type() != WhitespaceToken) {
@@ skipping 179 matching lines @@
 bool CSSParserSelector::hasHostPseudoSelector() const
 {
     for (CSSParserSelector* selector = const_cast<CSSParserSelector*>(this); selector; selector = selector->tagHistory()) {
         if (selector->pseudoType() == CSSSelector::PseudoHost || selector->pseudoType() == CSSSelector::PseudoHostContext)
             return true;
     }
     return false;
 }
 
 } // namespace blink