Remove TreatNullAs=NullString for HTMLObjectElement

LayoutTests/fast/dom/element-attribute-js-null-expected.txt

Index: LayoutTests/fast/dom/element-attribute-js-null-expected.txt
diff --git a/LayoutTests/fast/dom/element-attribute-js-null-expected.txt b/LayoutTests/fast/dom/element-attribute-js-null-expected.txt
index 938d79ea2f587366cf98d74c7eef6c2b4a9e662d..dbb9d0fad365e7c980663c4cd4ed4c2803b21ea8 100644
--- a/LayoutTests/fast/dom/element-attribute-js-null-expected.txt
+++ b/LayoutTests/fast/dom/element-attribute-js-null-expected.txt
@@ -202,19 +202,19 @@ TEST SUCCEEDED: The value was the string 'null'. [tested HTMLMetaElement.scheme]
 TEST SUCCEEDED: The value was the string 'null' resolved as a URL. [tested HTMLModElement.cite]
 TEST SUCCEEDED: The value was the string 'null'. [tested HTMLModElement.dateTime]
 
-TEST SUCCEEDED: The value was the empty string. [tested HTMLObjectElement.code]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLObjectElement.align]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLObjectElement.archive]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLObjectElement.code]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLObjectElement.align]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLObjectElement.archive]
 TEST SUCCEEDED: The value was the empty string. [tested HTMLObjectElement.border]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLObjectElement.codeBase]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLObjectElement.codeType]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLObjectElement.data]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLObjectElement.height]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLObjectElement.name]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLObjectElement.standby]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLObjectElement.type]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLObjectElement.useMap]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLObjectElement.width]
+TEST SUCCEEDED: The value was the string 'null' resolved as a URL. [tested HTMLObjectElement.codeBase]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLObjectElement.codeType]
+TEST SUCCEEDED: The value was the string 'null' resolved as a URL. [tested HTMLObjectElement.data]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLObjectElement.height]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLObjectElement.name]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLObjectElement.standby]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLObjectElement.type]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLObjectElement.useMap]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLObjectElement.width]
 
 TEST SUCCEEDED: The value was the string 'null'. [tested HTMLOListElement.type]