Split out CSSParser public API

Source/core/css/CSSPrimitiveValue.cpp

Index: Source/core/css/CSSPrimitiveValue.cpp
diff --git a/Source/core/css/CSSPrimitiveValue.cpp b/Source/core/css/CSSPrimitiveValue.cpp
index 3e6391ccf09162ce82337d19da2c9fcebc353d7f..4c526924c7f2e080c91e2bfdcf85d4efd262d444 100644
--- a/Source/core/css/CSSPrimitiveValue.cpp
+++ b/Source/core/css/CSSPrimitiveValue.cpp
@@ -705,8 +705,8 @@ double CSSPrimitiveValue::getDoubleValue() const
 
 CSSPrimitiveValue::UnitTypes CSSPrimitiveValue::canonicalUnitTypeForCategory(UnitCategory category)
 {
-    // The canonical unit type is chosen according to the way BisonCSSParser::validUnit() chooses the default unit
-    // in each category (based on unitflags).
+    // The canonical unit type is chosen according to the way CSSParser::validUnit()
+    // chooses the default unit in each category (based on unitflags).
     switch (category) {
     case UNumber:
         return CSS_NUMBER;
@@ -759,7 +759,8 @@ bool CSSPrimitiveValue::getDoubleValueInternal(UnitTypes requestedUnitType, doub
     }
 
     if (sourceUnitType == CSS_NUMBER) {
-        // We interpret conversion from CSS_NUMBER in the same way as BisonCSSParser::validUnit() while using non-strict mode.
+        // We interpret conversion from CSS_NUMBER in the same way as
+        // CSSParser::validUnit() while using non-strict mode.
         sourceUnitType = canonicalUnitTypeForCategory(targetCategory);
         if (sourceUnitType == CSS_UNKNOWN)
             return false;