[css-typed-om] Update WPT IDL test and clean up implementation IDL.

This patch updates the WPT IDL test to the current spec.
We also clean up the implementation IDL to match the spec.

Bug: 812915
Change-Id: Id2ca308832344e824b0e7b7eaa6198dc6d7c7e03

interfaces/css-typed-om.idl

@@ -16,28 +16,22 @@ interface StylePropertyMapReadOnly {
     readonly attribute long size;
 };
 
-callback UpdateFunction = CSSStyleValue (CSSStyleValue oldValue);
-
 [Exposed=Window]
 interface StylePropertyMap : StylePropertyMapReadOnly {
-    maplike<DOMString, sequence<CSSStyleValue>>;
+    void set(DOMString property, (CSSStyleValue or DOMString)... values);
     void append(DOMString property, (CSSStyleValue or DOMString)... values);
     void delete(DOMString property);
-    void set(DOMString property, (CSSStyleValue or DOMString)... values);
     void clear();
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 partial interface Element {
     StylePropertyMapReadOnly computedStyleMap();
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 partial interface CSSStyleRule {
     [SameObject] readonly attribute StylePropertyMap styleMap;
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 partial interface ElementCSSInlineStyle {
     [SameObject] readonly attribute StylePropertyMap attributeStyleMap;
 };
@@ -66,8 +60,6 @@ interface CSSKeywordValue : CSSStyleValue {
     attribute DOMString value;
 };
 
-typedef (DOMString or CSSKeywordValue) CSSKeywordish;
-
 typedef (double or CSSNumericValue) CSSNumberish;
 
 enum CSSNumericBaseType {
@@ -306,7 +298,7 @@ interface CSSMatrixComponent : CSSTransformComponent {
 };
 
 dictionary CSSMatrixComponentOptions {
-    boolean is2D = false;
+    boolean is2D;
 };
 
 [Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),