Part 1: Modify wpt pointerevent_releasepointercapture_release_right_a…

…fter_capture-manual.html to use WebDriver

Depends on D102057

Differential Revision: https://phabricator.services.mozilla.com/D102058

bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1687066
gecko-commit: 9da5d0b7557fce8361689c78931ab4c1bd07bd52
gecko-reviewers: masayuki

pointerevents/pointerevent_releasepointercapture_release_right_after_capture-manual.html → pointerevents/pointerevent_releasepointercapture_release_right_after_capture.html

@@ -6,8 +6,12 @@
         <link rel="stylesheet" type="text/css" href="pointerevent_styles.css">
         <script src="/resources/testharness.js"></script>
         <script src="/resources/testharnessreport.js"></script>
+        <script src="/resources/testdriver.js"></script>
+        <script src="/resources/testdriver-actions.js"></script>
+        <script src="/resources/testdriver-vendor.js"></script>
         <script src="pointerevent_support.js"></script>
         <script type="text/javascript">
+            var actions_promise;
             var detected_pointertypes = {};
             add_completion_callback(showPointerTypes);
             var test_setPointerCapture = async_test("Release pointer capture right after setpointercapture");
@@ -36,8 +40,19 @@
                 });
 
                 on_event(target0, "pointerup", function (event) {
-                    test_setPointerCapture.done();
+                    // Make sure the test finishes after all the input actions are completed.
+                    actions_promise.then( () => {
+                        test_setPointerCapture.done();
+                    });
                 });
+
+                // Inject mouse inputs.
+                actions_promise = new test_driver.Actions()
+                    .pointerMove(0, 0, {origin: target0})
+                    .pointerDown()
+                    .pointerMove(10, 10, {origin: target0})
+                    .pointerUp()
+                    .send();
             }
         </script>
     </head>