Revert "Do not correct for zoom for number line-height"

Source/core/css/ComputedStyleCSSValueMapping.cpp

Index: Source/core/css/ComputedStyleCSSValueMapping.cpp
diff --git a/Source/core/css/ComputedStyleCSSValueMapping.cpp b/Source/core/css/ComputedStyleCSSValueMapping.cpp
index 608e31ec3d17b03a6eeb5ee7021acdb872887343..afdb14398cc0f3540e8298c56cc37a608bc3e0ad 100644
--- a/Source/core/css/ComputedStyleCSSValueMapping.cpp
+++ b/Source/core/css/ComputedStyleCSSValueMapping.cpp
@@ -479,11 +479,7 @@ static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> valueForLineHeight(const Comput
     if (length.isNegative())
         return cssValuePool().createIdentifierValue(CSSValueNormal);
 
-    float floatValue = floatValueForLength(length, style.fontDescription().specifiedSize());
-    if (length.isPercent())
-        return cssValuePool().createValue(floatValue, CSSPrimitiveValue::CSS_PX);
-
-    return zoomAdjustedPixelValue(floatValue, style);
+    return zoomAdjustedPixelValue(floatValueForLength(length, style.fontDescription().specifiedSize()), style);
 }
 
 static CSSValueID identifierForFamily(const AtomicString& family)