Ignore declarations with out of range numeric values

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 9bcb86c47527544275c8ce70cc9a3671c5ec18e5..b3fab29917349bc243c187b4cbc3c8a104f0d92f 100644
--- a/Source/core/css/parser/CSSParserValues.h
+++ b/Source/core/css/parser/CSSParserValues.h
@@ -268,11 +268,8 @@ inline void CSSParserValue::setFromNumber(double value, int unit)
 {
     id = CSSValueInvalid;
     isInt = false;
-    if (std::isfinite(value))
-        fValue = value;
-    else
-        fValue = 0;
-    this->unit = unit;
+    fValue = value;
+    this->unit = std::isfinite(value) ? unit : CSSPrimitiveValue::CSS_UNKNOWN;
 }
 
 inline void CSSParserValue::setFromOperator(UChar c)