Simplify parseShadowValue

Source/core/css/parser/CSSPropertyParser.h

Index: Source/core/css/parser/CSSPropertyParser.h
diff --git a/Source/core/css/parser/CSSPropertyParser.h b/Source/core/css/parser/CSSPropertyParser.h
index 4f199bb0754e1cc97e8fbe871cdbc1374f578949..4e1f07b1f0e088614b066a9baccb1eec2606a49a 100644
--- a/Source/core/css/parser/CSSPropertyParser.h
+++ b/Source/core/css/parser/CSSPropertyParser.h
@@ -44,6 +44,7 @@ class CSSParserValueList;
 class CSSPrimitiveValue;
 class CSSProperty;
 class CSSQuadValue;
+class CSSShadowValue;
 class CSSValue;
 class CSSValueList;
 class StylePropertyShorthand;
@@ -210,6 +211,7 @@ private:
 
     // CSS3 Parsing Routines (for properties specific to CSS3)
     PassRefPtrWillBeRawPtr<CSSValueList> parseShadow(CSSParserValueList*, CSSPropertyID);
+    PassRefPtrWillBeRawPtr<CSSShadowValue> parseSingleShadow(CSSParserValueList*, bool allowInset = false, unsigned maxLength = 4);

[Timothy Loh, 2015/09/04 05:04:51]

Maybe just allowSpread instead of maxLength? Also I'd prefer to not have default
arguments :-)

     bool parseBorderImageShorthand(CSSPropertyID, bool important);
     PassRefPtrWillBeRawPtr<CSSValue> parseBorderImage(CSSPropertyID);
     bool parseBorderImageRepeat(RefPtrWillBeRawPtr<CSSValue>&);