e=R(t).document;return e.scrollingElement||e.documentElement}Mi.prototype.isVideo=function(){return this.isYoutube()||this.isVimeo()||this.isHTML5()},Mi.prototype.isHTML5=function(){return"VIDEO"===this.el.tagName},Mi.prototype.isIFrame=function(){return"IFRAME"===this.el.tagName},Mi.prototype.isYoutube=function(){return this.isIFrame()&&!!this.el.src.match(/\/\/.*?youtube(-nocookie)?\.[a-z]+\/(watch\?v=[^&\s]+|embed)|youtu\.be\/.*/)},Mi.prototype.isVimeo=function(){return this.isIFrame()&&!!this.el.src.match(/v...

      case 0:
        assertFalse(desc, isGuarded(method));
        assertFalse(desc, isTimed(method));
        break;
      case 1:
        assertTrue(desc, isGuarded(method));
        assertFalse(desc, isTimed(method));
        break;
      case 2:
        assertFalse(desc, isGuarded(method));
        assertTrue(desc, isTimed(method));
        break;
      case 3:
        assertTrue(desc, isGuarded(method));

    } else if (isTryEnter(method)) {
      assertFalse(desc, isTimed(method));
      assertTrue(desc, isBoolean(method));
      assertFalse(desc, isInterruptible(method));
    } else if (isWaitFor(method)) {
      assertTrue(desc, isGuarded(method));
      assertEquals(desc, isTimed(method), isBoolean(method));
    } else { // any other enterXxx method
      assertEquals(desc, isTimed(method), isBoolean(method));
    }
  }

	pending := !t.stopped
	t.stopped = false
	t.Ticker.Reset(d)
	return pending
}

func testTimerChan(t *testing.T, tim timer, C <-chan Time, synctimerchan bool) {
	_, isTimer := tim.(*Timer)
	isTicker := !isTimer

	// Retry parameters. Enough to deflake even on slow machines.
	// Windows in particular has very coarse timers so we have to
	// wait 10ms just to make a timer go off.
	const (

isCSS=pe.initiatorType===INITIATOR_TYPE.CSS;const isFling=pe.containsTypeNames([INPUT_TYPE.FLING_START]);const isVideo=pe.initiatorType===INITIATOR_TYPE.VIDEO;for(let i=0;i<protoExpectations.length;++i){const otherPE=protoExpectations[i];if(otherPE.type!==pe.type)continue;if((isCSS&&otherPE.initiatorType!==INITIATOR_TYPE.CSS)||isFling!==otherPE.containsTypeNames([INPUT_TYPE.FLING_START])||isVideo&&otherPE.initiatorType!==INITIATOR_TYPE.VIDEO||otherPE.initiatorType===INITIATOR_TYPE.VR){continue;}
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