1 Check autoscroll within an inner frame by drag-and-drop
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 PASS Autoscroll should have scrolled the iframe downwards, and did.
7 PASS iframe.contentDocument.scrollingElement.scrollTop < middleTermScrollOffset is true
8 PASS successfullyParsed is true
11 For manual testing, drag and drop "Drop Me" downwards and then upwards.