[css-animations-2] Convert constructors to constructor operations

Author: birtles

css-animations-2/Overview.bs

@@ -164,13 +164,13 @@ last) as follows:
     of their corresponding <a>owning elements</a>.
     With regard to pseudo-elements, the sort order is as follows:
 
-    *  element
-    *  ::marker
-    *  ::before
-    *  any other pseudo-elements not mentioned specifically in this list,
-       sorted in ascending order by the Unicode codepoints that make up each selector
-    *  ::after
-    *  element children
+    *   element
+    *   ::marker
+    *   ::before
+    *   any other pseudo-elements not mentioned specifically in this list,
+        sorted in ascending order by the Unicode codepoints that make up each selector
+    *   ::after
+    *   element children
 
 1.  Otherwise, sort <var>A</var> and <var>B</var> based on their position in the
     computed value of the 'animation-name' property of the (common) <a>owning
@@ -560,16 +560,17 @@ We need to define a constructor for {{CSSAnimation}}.
 Perhaps something like the following:
 
 <pre class="idl">
-[Constructor (Animatable? target,
+partial interface CSSAnimation {
+  constructor(Animatable? target,
               CSSOMString animationName,
               optional (unrestricted double or KeyframeEffectOptions) options,
-              optional CSSOMString defaultEasing = "ease"),
- Constructor (Animatable? target,
+              optional CSSOMString defaultEasing = "ease");
+  constructor(Animatable? target,
               CSSOMString animationName,
               (unrestricted double or KeyframeEffectOptions) options,
               CSSOMString defaultEasing,
-              AnimationTimeline? timeline)]
-partial interface CSSAnimation { };
+              AnimationTimeline? timeline);
+};
 </pre>
 
 The difficulty is with liveness. The most useful and least magical
@@ -582,9 +583,8 @@ updating the set of keyframes returned by
 Something like,
 
 <pre class="idl">
-[Exposed=Window,
- Constructor (CSSOMString keyframesName, CSSOMString defaultEasing)]
 interface CSSKeyframeEffectReadOnly : KeyframeEffectReadOnly {
+  constructor(CSSOMString keyframesName, CSSOMString defaultEasing);
   readonly attribute CSSOMString keyframesName;
   readonly attribute CSSOMString defaultEasing;
 };