Selection API: Some functions should throw InvalidNodeTypeError and IndexSizeError.

third_party/WebKit/LayoutTests/editing/pasteboard/script-tests/dataTransfer-setData-getData.js

 description("Tests correct behavior of event.dataTransfer.setData/getData for 'URL', 'text/uri-list' and 'text/plain'");
 
 // Important that we put these at the top of the doc so that logging does not cause it to go out of view (and be undragable)
 var dragMe = document.createElement("div");
 dragMe.innerHTML = "<span id='dragme'>Drag me</span>";
 document.body.insertBefore(dragMe, document.body.firstChild);
 var dragTarget = document.createElement("div");
 dragTarget.innerHTML = "Drag here"
 dragTarget.style.backgroundColor = "blue";
 dragTarget.style.width = "100px";
@@ skipping 29 matching lines @@
 
 function moveMouseToCenterOfElement(element)
 {
     var centerX = element.offsetLeft + element.offsetWidth / 2;
     var centerY = element.offsetTop + element.offsetHeight / 2;
     eventSender.mouseMoveTo(centerX, centerY);
 }
 
 function dragOntoDragTarget() {
     var e = document.getElementById("dragme");
-    window.getSelection().setBaseAndExtent(e, 0, e, 4); 
+    window.getSelection().setBaseAndExtent(e, 0, e, 1);
     x = e.offsetLeft + 10;
     y = e.offsetTop + e.offsetHeight / 2;
     eventSender.mouseMoveTo(x, y);
     eventSender.mouseDown();
     eventSender.leapForward(400);
     moveMouseToCenterOfElement(dragTarget);
     eventSender.mouseUp();
 }
 
 function doDrop() {
@@ skipping 74 matching lines @@
     runTest();
     // Clean up after ourselves
     dragMe.parentNode.removeChild(dragMe);
     dragTarget.parentNode.removeChild(dragTarget);
 } else {
     testFailed("This test is not interactive, please run using DumpRenderTree");
 }
 
 var successfullyParsed = true;