Simplify UnicodeRangeToken handling

Source/core/css/parser/CSSParserValues.h

Index: Source/core/css/parser/CSSParserValues.h
diff --git a/Source/core/css/parser/CSSParserValues.h b/Source/core/css/parser/CSSParserValues.h
index 8146ad6ea829ff8e766c77e3b8b43923e1e9c239..8f89f509236d1efc024a204af460ec6b13fe8a79 100644
--- a/Source/core/css/parser/CSSParserValues.h
+++ b/Source/core/css/parser/CSSParserValues.h
@@ -111,6 +111,10 @@ struct CSSParserValue {
         CSSParserString string;
         CSSParserFunction* function;
         CSSParserValueList* valueList;
+        struct {
+            UChar32 start;
+            UChar32 end;
+        } m_unicodeRange;
     };
     enum {
         Operator  = 0x100000,
@@ -120,7 +124,7 @@ struct CSSParserValue {
         HexColor = 0x100004,
         // Represents a dimension by a list of two values, a CSS_NUMBER and an CSS_IDENT
         DimensionList = 0x100006,
-        // Represents a unicode range by a list of two CSS_NUMBERs
+        // Represents a unicode range by a pair of UChar32 values
         UnicodeRange = 0x100007,
     };
     int unit;