Fix touch handling in DragLayout.

Fixes: 33104074

-Only accept drags on HistoryFrame when isOpen()
-requestDisallowInterceptTouchEvent() in CalculatorResult to prevent
DragLayout from scrolling when a CalculatorResult is the target

Change-Id: If0dfbccc2fc05a90383a03cf397e6becd4496554
4 files changed