Migrate isInputPending options class to dictionary

Updates the API for isInputPending and associated tests to accept a dictionary
object for parameterization directly, making it compliant with the updated
spec.

Bug: 910421
Change-Id: I39e569ee6215044a9b59a8834d19cac76915cb9c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2425138
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Andrew Comminos <acomminos@fb.com>
Cr-Commit-Position: refs/heads/master@{#810490}

interfaces/is-input-pending.idl

@@ -3,16 +3,10 @@
 // (https://github.com/w3c/webref)
 // Source: Early detection of input events (https://wicg.github.io/is-input-pending/)
 
-dictionary IsInputPendingOptionsInit {
+dictionary IsInputPendingOptions {
   boolean includeContinuous = false;
 };
 
-[Exposed=Window]
-interface IsInputPendingOptions {
-  constructor(optional IsInputPendingOptionsInit isInputPendingOptionsInit = {});
-  attribute boolean includeContinuous;
-};
-
 [Exposed=Window] interface Scheduling {
    boolean isInputPending(optional IsInputPendingOptions isInputPendingOptions);
 };

is-input-pending/idlharness.window.js

@@ -8,7 +8,6 @@ idl_test(
   ['html', 'dom'],
   async idl_array => {
     idl_array.add_objects({
-      IsInputPendingOptions: ['new IsInputPendingOptions'],
       Scheduling: ['navigator.scheduling'],
     });
   }

is-input-pending/resources/input-onmessage.js

@@ -2,8 +2,8 @@
 onmessage = async e => {
   if (e.data !== 'check-input') return;
 
-  const discreteOptions = new IsInputPendingOptions({ includeContinuous: false });
-  const continuousOptions = new IsInputPendingOptions({ includeContinuous: true });
+  const discreteOptions = { includeContinuous: false };
+  const continuousOptions = { includeContinuous: true };
 
   // Use a reasonable time to wait after dispatching events, since we want to be
   // able to test for cases where isInputPending returns false.