Remove TreatNullAs=NullString for HTMLScriptElement

Source/core/html/HTMLScriptElement.idl

Index: Source/core/html/HTMLScriptElement.idl
diff --git a/Source/core/html/HTMLScriptElement.idl b/Source/core/html/HTMLScriptElement.idl
index ea4275d53f6f01145766b84c7c0b69b5f9c71cb4..1f1e260a7f9992e76de60506b19fef9431bdefb0 100644
--- a/Source/core/html/HTMLScriptElement.idl
+++ b/Source/core/html/HTMLScriptElement.idl
@@ -18,14 +18,14 @@
  */
 
 interface HTMLScriptElement : HTMLElement {
-    [TreatNullAs=NullString] attribute DOMString text;
-    [Reflect=for, TreatNullAs=NullString] attribute DOMString htmlFor;
-    [Reflect, TreatNullAs=NullString] attribute DOMString event;
-    [Reflect, TreatNullAs=NullString] attribute DOMString charset;
+    attribute DOMString text;
+    [Reflect=for] attribute DOMString htmlFor;
+    [Reflect] attribute DOMString event;
+    [Reflect] attribute DOMString charset;
     attribute boolean async;
     [Reflect] attribute boolean defer;
-    [Reflect, TreatNullAs=NullString, URL, PerWorldBindings, ActivityLogging=SetterForIsolatedWorlds] attribute DOMString src;
-    [Reflect, TreatNullAs=NullString] attribute DOMString type;
-    [Reflect, TreatNullAs=NullString] attribute DOMString crossOrigin;
-    [Reflect, TreatNullAs=NullString, RuntimeEnabled=ExperimentalContentSecurityPolicyFeatures] attribute DOMString nonce;
+    [Reflect, URL, PerWorldBindings, ActivityLogging=SetterForIsolatedWorlds] attribute DOMString src;
+    [Reflect] attribute DOMString type;
+    [Reflect] attribute DOMString crossOrigin;
+    [Reflect, RuntimeEnabled=ExperimentalContentSecurityPolicyFeatures] attribute DOMString nonce;
 };