Merge 138808

LayoutTests/fast/events/touch/script-tests/document-create-touch-list.js

 description("This tests support for the document.createTouchList API.");
 
 shouldBeTrue('"createTouchList" in document');
 
 // Test createTouchList with no arguments.
 var touchList = document.createTouchList();
 shouldBeNonNull("touchList");
 shouldBe("touchList.length", "0");
 shouldBeNull("touchList.item(0)");
 shouldBeNull("touchList.item(1)");
 shouldThrow("touchList.item()");
 
 // Test createTouchList with Touch objects as arguments.
 try {
     var t = document.createTouch(window, document.body, 12341, 60, 65, 100, 105);
     var t2 = document.createTouch(window, document.body, 12342, 50, 55, 115, 120);
     var tl = document.createTouchList(t, t2);
 
     var evt = document.createEvent("TouchEvent");
     evt.initTouchEvent(tl, tl, tl, "touchstart", window, 0, 0, 0, 0, true, false, false, false);
 
     document.body.addEventListener("touchstart", function handleTouchStart(ev) {
         ts = ev;
-        shouldBeTrue("ts instanceof TouchEvent");
-        shouldBeTrue("ts.touches instanceof TouchList");
         shouldBe("ts.touches.length", "2");
-        shouldBeTrue("ts.touches[0] instanceof Touch");
         shouldBe("ts.touches[0].identifier", "12341");
         shouldBe("ts.touches[0].clientX", "60");
         shouldBe("ts.touches[1].screenY", "120");
         shouldBe("ts.ctrlKey", "true");
     });
 
     document.body.dispatchEvent(evt);
 } catch(e) {
     testFailed("An exception was thrown: " + e.message);
 }
 
 // Test createTouchList with invalid arguments which throws exceptions.
 try {
     var tl = document.createTouchList(1, 2);
 } catch(e) {
     testFailed("An exception was thrown: " + e.message);
 }
 isSuccessfullyParsed();