Mousemove event should be fired when the mouse stays in the document but there is no element.

LayoutTests/fast/events/mouse-events-within-no-element-expected.txt

+
+Tests that the mouse event is fired when the mouse pointer stays in document but there is no element
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS successfullyParsed is true
+
+TEST COMPLETE
+
+
+--------
+Frame: '<!--framePath //<!--frame0-->-->'
+--------
+POINTER
+PASS events[0] is "mousemove"
+PASS targets[0] is "#document"
+PASS events[1] is "mousemove"
+PASS targets[1] is "BODY"
+PASS events[2] is "mousemove"
+PASS targets[2] is "#document"
+PASS events[3] is "mouseover"
+PASS targets[3] is "#document"
+PASS events[4] is "mouseover"
+PASS targets[4] is "BODY"
+PASS events[5] is "mouseover"
+PASS targets[5] is "#document"
+PASS events[6] is "mouseout"
+PASS targets[6] is "#document"
+PASS events[7] is "mouseout"
+PASS targets[7] is "BODY"
+PASS events[8] is "mouseout"
+PASS targets[8] is "#document"
+PASS events[9] is "mouseenter"
+PASS targets[9] is "#document"
+PASS events[10] is "mouseleave"
+PASS targets[10] is "#document"
+PASS events[11] is "mouseenter"
+PASS targets[11] is "BODY"
+PASS events[12] is "mouseenter"
+PASS targets[12] is "#document"
+PASS events[13] is "mouseleave"
+PASS targets[13] is "BODY"
+PASS events[14] is "mouseleave"
+PASS targets[14] is "#document"
+PASS successfullyParsed is true
+
+TEST COMPLETE
+