Move isValid/isCurrentColor from Color to StyleColor

Source/core/css/CSSParser-in.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 5854 matching lines @@
 
     if (name.is8Bit())
         parseResult = fastParseColorInternal(rgb, name.characters8(), length, strict);
     else
         parseResult = fastParseColorInternal(rgb, name.characters16(), length, strict);
 
     if (parseResult)
         return true;
 
     // Try named colors.
-    Color tc;
-    tc.setNamedColor(name);
-    if (tc.isValid()) {
-        rgb = tc.rgb();
+    StyleColor color;
+    color.setNamedColor(name);
+    if (color.isValid()) {
+        rgb = color.rgb();
         return true;
     }
     return false;
 }
 
 inline double CSSParser::parsedDouble(CSSParserValue *v, ReleaseParsedCalcValueCondition releaseCalc)
 {
     const double result = m_parsedCalculation ? m_parsedCalculation->doubleValue() : v->fValue;
     if (releaseCalc == ReleaseParsedCalcValue)
         m_parsedCalculation.release();
@@ skipping 5851 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");
 }
 
 }