Rename Stylesheet::Type_ to Stylesheet::Type (#37126)

I'm not sure if `CodegenRust.py` was supposed to remove the underscore,
but we end up exposing `type_` to javascript which is obviously wrong.
There's no need to rename the method in the first place, because `Type`
(with a capital T) is not a rust keyword.

Testing: Covered by existing web platform tests

---------

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

components/script/dom/stylesheet.rs

@@ -39,8 +39,8 @@ impl StyleSheet {
 }
 
 impl StyleSheetMethods<crate::DomTypeHolder> for StyleSheet {
-    // https://drafts.csswg.org/cssom/#dom-stylesheet-type
-    fn Type_(&self) -> DOMString {
+    /// <https://drafts.csswg.org/cssom/#dom-stylesheet-type>
+    fn Type(&self) -> DOMString {
         self.type_.clone()
     }
 

components/script_bindings/webidls/StyleSheet.webidl

@@ -5,7 +5,7 @@
 // https://drafts.csswg.org/cssom/#the-stylesheet-interface
 [Exposed=Window]
 interface StyleSheet {
-  readonly attribute DOMString type_;
+  readonly attribute DOMString type;
   readonly attribute DOMString? href;
 
   readonly attribute Element? ownerNode;

tests/wpt/meta/css/cssom/idlharness.html.ini

@@ -53,9 +53,6 @@
   [CSSStyleDeclaration interface: sheet.cssRules[2\].style must inherit property "setProperty(CSSOMString, CSSOMString, optional CSSOMString)" with the proper type]
     expected: FAIL
 
-  [StyleSheet interface: attribute type]
-    expected: FAIL
-
   [Stringification of sheet.cssRules[2\].cssRules[0\]]
     expected: FAIL
 
@@ -254,9 +251,6 @@
   [CSSStyleDeclaration interface: sheet.cssRules[2\].cssRules[0\].style must inherit property "parentRule" with the proper type]
     expected: FAIL
 
-  [StyleSheet interface: sheet must inherit property "type" with the proper type]
-    expected: FAIL
-
   [CSSStyleDeclaration interface: sheet.cssRules[2\].cssRules[0\].style must inherit property "cssText" with the proper type]
     expected: FAIL