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

Source/core/html/forms/TextFieldInputType.cpp

Index: Source/core/html/forms/TextFieldInputType.cpp
diff --git a/Source/core/html/forms/TextFieldInputType.cpp b/Source/core/html/forms/TextFieldInputType.cpp
index 1794ee257b71fb8ed582fb0e81a60406cb94ab21..db8f606a9a47bf7ff324ba80e40ade3742de0bb3 100644
--- a/Source/core/html/forms/TextFieldInputType.cpp
+++ b/Source/core/html/forms/TextFieldInputType.cpp
@@ -53,6 +53,7 @@
 #include "core/rendering/RenderLayer.h"
 #include "core/rendering/RenderTextControlSingleLine.h"
 #include "core/rendering/RenderTheme.h"
+#include "platform/text/TextDirection.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
@@ -468,8 +469,10 @@ bool TextFieldInputType::appendFormData(FormDataList& list, bool multipart) cons
 {
     InputType::appendFormData(list, multipart);
     const AtomicString& dirnameAttrValue = element().fastGetAttribute(dirnameAttr);
-    if (!dirnameAttrValue.isNull())
-        list.appendData(dirnameAttrValue, element().directionForFormData());
+    if (!dirnameAttrValue.isNull()) {
+        const AtomicString& dirValue = element().determineDirection() == RTL ? "rtl" : "ltr";
+        list.appendData(dirnameAttrValue, dirValue);
+    }
     return true;
 }