Make closeWatcher.requestClose() not require user activation

Per the conversation here:

openui/open-ui#1128 (comment)

There's a desire to ship closeWatcher.requestClose() along with
dialog.requestclose() both not requiring user activation.

The spec PR has been updated accordingly:
whatwg/html#10737

(in this commit:
whatwg/html@76619aa)

Fixed: 383593252
Change-Id: I8c05e352d8b4964407a1cee36f35372e192e2ca5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6092173
Auto-Submit: Mason Freed <[email protected]>
Reviewed-by: David Baron <[email protected]>
Reviewed-by: Mason Freed <[email protected]>
Commit-Queue: Mason Freed <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1396007}

close-watcher/basic.html

@@ -14,7 +14,7 @@
 
   watcher.requestClose();
 
-  assert_array_equals(events, ["cancel[cancelable=false]", "close"]);
+  assert_array_equals(events, ["cancel[cancelable=true]", "close"]);
 }, "requestClose() with no user activation");
 
 test(t => {
@@ -43,10 +43,10 @@
   let watcher = createRecordingCloseWatcher(t, events);
 
   watcher.requestClose();
-  assert_array_equals(events, ["cancel[cancelable=false]", "close"]);
+  assert_array_equals(events, ["cancel[cancelable=true]", "close"]);
 
   watcher.destroy();
-  assert_array_equals(events, ["cancel[cancelable=false]", "close"]);
+  assert_array_equals(events, ["cancel[cancelable=true]", "close"]);
 }, "requestClose() then destroy()");
 
 test(t => {

close-watcher/inside-event-listeners.html

@@ -30,10 +30,10 @@
   watcher.onclose = () => { watcher.destroy(); }
 
   watcher.requestClose();
-  assert_array_equals(events, ["cancel[cancelable=false]", "close"]);
+  assert_array_equals(events, ["cancel[cancelable=true]", "close"]);
 
   watcher.requestClose();
-  assert_array_equals(events, ["cancel[cancelable=false]", "close"], "since it was inactive, no more events fired");
+  assert_array_equals(events, ["cancel[cancelable=true]", "close"], "since it was inactive, no more events fired");
 }, "destroy() inside onclose");
 
 promise_test(async t => {
@@ -58,10 +58,10 @@
   watcher.onclose = () => { watcher.close(); }
 
   watcher.requestClose();
-  assert_array_equals(events, ["cancel[cancelable=false]", "close"]);
+  assert_array_equals(events, ["cancel[cancelable=true]", "close"]);
 
   watcher.requestClose();
-  assert_array_equals(events, ["cancel[cancelable=false]", "close"], "since it was inactive, no more events fired");
+  assert_array_equals(events, ["cancel[cancelable=true]", "close"], "since it was inactive, no more events fired");
 }, "close() inside onclose");
 
 promise_test(async t => {
@@ -86,9 +86,9 @@
   watcher.onclose = () => { watcher.requestClose(); }
 
   watcher.requestClose();
-  assert_array_equals(events, ["cancel[cancelable=false]", "close"]);
+  assert_array_equals(events, ["cancel[cancelable=true]", "close"]);
 
   watcher.requestClose();
-  assert_array_equals(events, ["cancel[cancelable=false]", "close"], "since it was inactive, no more events fired");
+  assert_array_equals(events, ["cancel[cancelable=true]", "close"], "since it was inactive, no more events fired");
 }, "requestClose() inside onclose");
 </script>