Resolve direction correctly when dir attribute is not in a defined state

Source/core/html/HTMLTextFormControlElement.cpp

Index: Source/core/html/HTMLTextFormControlElement.cpp
diff --git a/Source/core/html/HTMLTextFormControlElement.cpp b/Source/core/html/HTMLTextFormControlElement.cpp
index 658ef9df2375ac4015e2f817e6984bd35abc38bf..e23baf1d01a2f9d46e1fdf3cf357f8a8e9780eff 100644
--- a/Source/core/html/HTMLTextFormControlElement.cpp
+++ b/Source/core/html/HTMLTextFormControlElement.cpp
@@ -700,26 +700,6 @@ HTMLTextFormControlElement* enclosingTextFormControl(Node* container)
     return ancestor && isHTMLTextFormControlElement(*ancestor) && container->containingShadowRoot()->type() == ShadowRoot::UserAgentShadowRoot ? toHTMLTextFormControlElement(ancestor) : 0;
 }
 
-String HTMLTextFormControlElement::directionForFormData() const
-{
-    for (const HTMLElement* element = this; element; element = Traversal<HTMLElement>::firstAncestor(*element)) {
-        const AtomicString& dirAttributeValue = element->fastGetAttribute(dirAttr);
-        if (dirAttributeValue.isNull())
-            continue;
-
-        if (equalIgnoringCase(dirAttributeValue, "rtl") || equalIgnoringCase(dirAttributeValue, "ltr"))
-            return dirAttributeValue;
-
-        if (equalIgnoringCase(dirAttributeValue, "auto")) {
-            bool isAuto;
-            TextDirection textDirection = element->directionalityIfhasDirAutoAttribute(isAuto);
-            return textDirection == RTL ? "rtl" : "ltr";
-        }
-    }
-
-    return "ltr";
-}
-
 HTMLElement* HTMLTextFormControlElement::innerEditorElement() const
 {
     return toHTMLElement(userAgentShadowRoot()->getElementById(ShadowElementNames::innerEditor()));