Remove value packing and custom style building for text-underline-position.

Source/core/css/resolver/StyleBuilderCustom.cpp

Index: Source/core/css/resolver/StyleBuilderCustom.cpp
diff --git a/Source/core/css/resolver/StyleBuilderCustom.cpp b/Source/core/css/resolver/StyleBuilderCustom.cpp
index a4f2322806c297340a05e864ff60e7c60d065714..9016e7c6815ea1bb3150129fc365a712446206e9 100644
--- a/Source/core/css/resolver/StyleBuilderCustom.cpp
+++ b/Source/core/css/resolver/StyleBuilderCustom.cpp
@@ -1056,24 +1056,6 @@ void StyleBuilderFunctions::applyValueCSSPropertyWebkitTextEmphasisStyle(StyleRe
     }
 }
 
-void StyleBuilderFunctions::applyValueCSSPropertyTextUnderlinePosition(StyleResolverState& state, CSSValue* value)
-{
-    // This is true if value is 'auto' or 'alphabetic'.
-    if (value->isPrimitiveValue()) {
-        TextUnderlinePosition t = *toCSSPrimitiveValue(value);
-        state.style()->setTextUnderlinePosition(t);
-        return;
-    }
-
-    unsigned t = 0;
-    for (CSSValueListIterator i(value); i.hasMore(); i.advance()) {
-        CSSValue* item = i.value();
-        TextUnderlinePosition t2 = *toCSSPrimitiveValue(item);
-        t |= t2;
-    }
-    state.style()->setTextUnderlinePosition(static_cast<TextUnderlinePosition>(t));
-}
-
 void StyleBuilderFunctions::applyInitialCSSPropertyWillChange(StyleResolverState& state)
 {
     state.style()->setWillChangeContents(false);