Remove TreatNullAs=NullString for HTMLAnchorElement

Source/core/html/HTMLAnchorElement.idl

Index: Source/core/html/HTMLAnchorElement.idl
diff --git a/Source/core/html/HTMLAnchorElement.idl b/Source/core/html/HTMLAnchorElement.idl
index 88cf2d41e2b023a3fe31b3a7047c4a7de079e38d..116f7dcd5881f28cd348ed3b42db04f2c5d843fb 100644
--- a/Source/core/html/HTMLAnchorElement.idl
+++ b/Source/core/html/HTMLAnchorElement.idl
@@ -19,17 +19,17 @@
  */
 
 interface HTMLAnchorElement : HTMLElement {
-    [Reflect, TreatNullAs=NullString] attribute DOMString charset;
-    [Reflect, TreatNullAs=NullString] attribute DOMString coords;
-    [Reflect, TreatNullAs=NullString] attribute DOMString download;
-    [Reflect, TreatNullAs=NullString] attribute DOMString hreflang;
-    [Reflect, TreatNullAs=NullString] attribute DOMString name;
-    [Reflect, TreatNullAs=NullString] attribute DOMString ping;
-    [Reflect, TreatNullAs=NullString] attribute DOMString rel;
-    [Reflect, TreatNullAs=NullString] attribute DOMString rev;
-    [Reflect, TreatNullAs=NullString] attribute DOMString shape;
-    [Reflect, TreatNullAs=NullString] attribute DOMString target;
-    [Reflect, TreatNullAs=NullString] attribute DOMString type;
+    [Reflect] attribute DOMString charset;
+    [Reflect] attribute DOMString coords;
+    [Reflect] attribute DOMString download;
+    [Reflect] attribute DOMString hreflang;
+    [Reflect] attribute DOMString name;
+    [Reflect] attribute DOMString ping;
+    [Reflect] attribute DOMString rel;
+    [Reflect] attribute DOMString rev;
+    [Reflect] attribute DOMString shape;
+    [Reflect] attribute DOMString target;
+    [Reflect] attribute DOMString type;
 
     readonly attribute DOMString text;
 };