Remove TreatNullAs=NullString for <frame>, <frameset> and <iframe>

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 386b9e968471a0f15c80093f38e1a0dcf094f87d..c9a0488b26fafaa00f5d0ba4b565b558312b21ca 100644
--- a/LayoutTests/fast/dom/element-attribute-js-null-expected.txt
+++ b/LayoutTests/fast/dom/element-attribute-js-null-expected.txt
@@ -96,17 +96,17 @@ TEST SUCCEEDED: The value was the string 'get'. [tested HTMLFormElement.method]
 TEST SUCCEEDED: The value was the string 'null'. [tested HTMLFormElement.name]
 TEST SUCCEEDED: The value was the string 'null'. [tested HTMLFormElement.target]
 
-TEST SUCCEEDED: The value was the empty string. [tested HTMLFrameElement.frameBorder]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLFrameElement.longDesc]
+TEST SUCCEEDED: The value was the empty string. [tested HTMLFrameElement.location]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLFrameElement.frameBorder]
+TEST SUCCEEDED: The value was the string 'null' resolved as a URL. [tested HTMLFrameElement.longDesc]
 TEST SUCCEEDED: The value was the empty string. [tested HTMLFrameElement.marginHeight]
 TEST SUCCEEDED: The value was the empty string. [tested HTMLFrameElement.marginWidth]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLFrameElement.name]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLFrameElement.scrolling]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLFrameElement.src]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLFrameElement.location]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLFrameElement.name]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLFrameElement.scrolling]
+TEST SUCCEEDED: The value was the string 'null' resolved as a URL. [tested HTMLFrameElement.src]
 
-TEST SUCCEEDED: The value was the empty string. [tested HTMLFrameSetElement.cols]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLFrameSetElement.rows]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLFrameSetElement.cols]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLFrameSetElement.rows]
 
 TEST SUCCEEDED: The value was the empty string. [tested HTMLHeadElement.profile]
 
@@ -118,16 +118,17 @@ TEST SUCCEEDED: The value was the empty string. [tested HTMLHRElement.width]
 
 TEST SUCCEEDED: The value was the empty string. [tested HTMLHtmlElement.version]
 
-TEST SUCCEEDED: The value was the empty string. [tested HTMLIFrameElement.align]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLIFrameElement.frameBorder]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLIFrameElement.height]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLIFrameElement.longDesc]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLIFrameElement.align]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLIFrameElement.frameBorder]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLIFrameElement.height]
+TEST SUCCEEDED: The value was the string 'null' resolved as a URL. [tested HTMLIFrameElement.longDesc]
 TEST SUCCEEDED: The value was the empty string. [tested HTMLIFrameElement.marginHeight]
 TEST SUCCEEDED: The value was the empty string. [tested HTMLIFrameElement.marginWidth]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLIFrameElement.name]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLIFrameElement.scrolling]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLIFrameElement.src]
-TEST SUCCEEDED: The value was the empty string. [tested HTMLIFrameElement.width]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLIFrameElement.name]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLIFrameElement.scrolling]
+TEST SUCCEEDED: The value was the string 'null' resolved as a URL. [tested HTMLIFrameElement.src]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLIFrameElement.srcdoc]
+TEST SUCCEEDED: The value was the string 'null'. [tested HTMLIFrameElement.width]
 
 TEST SUCCEEDED: The value was the empty string. [tested HTMLImageElement.name]
 TEST SUCCEEDED: The value was the empty string. [tested HTMLImageElement.align]