Bug 1318720 - Don't test if idle callbacks may execute in the same period. r=smaug

MozReview-Commit-ID: HKjU4R6BChT

testing/web-platform/tests/html/webappapis/idle-callbacks/callback-idle-periods.html

@@ -5,38 +5,6 @@
 <script src="/resources/testharnessreport.js"></script>
 <script>
 
-async_test(function() {
-  // Check that two separate calls to requestIdleCallbacks can run in the same
-  // idle period.
-  var callback_1_deadline;
-  var callback_1_has_run = false;
-  var callback_1 = function(deadline) {
-    callback_1_has_run = true;
-    var remaining = deadline.timeRemaining();
-    if (remaining >= 5) {
-      // Should be enough time to run the next callback in the current idle
-      // period.
-      callback_1_deadline = performance.now() + remaining;
-    }
-  };
-  var callback_2 = this.step_func(function(deadline) {
-    assert_true(callback_1_has_run, "Should run callbacks in order of posting if they don't have a timeout.");
-    if (callback_1_deadline != undefined) {
-      assert_true(performance.now() < callback_1_deadline, "Should be able to run both callbacks in the same idle period.");
-      this.done();
-    } else {
-      // Might not have had enough idle time, so try again.
-      callback_1_has_run = false;
-      setTimeout(function() {
-        requestIdleCallback(callback_1);
-        requestIdleCallback(callback_2);
-      }, 0);
-    }
-  });
-  requestIdleCallback(callback_1);
-  requestIdleCallback(callback_2);
-}, 'requestIdleCallback can run multiple different requestIdleCallback callbacks in the same idle period.');
-
 async_test(function() {
   // Check that if an idle callback calls requestIdleCallback, the new callback
   // doesn't get the same deadline (i.e., runs in a new idle period).