21a97ef9f2
Programmatic scrolls fail when the scroll has not had a chance to start. In this case, the current position equals the last position; the logic erroneously cancels the scrolls, assuming that in this case the scroll has finished. Also, new scrolls should cancel the old velocity whether they are animated or not. This has a companion change in external/webkit, which is not required, but makes tap initiated scrolls work more reliably. bug:1331125 bug:3099569 Change-Id: I80ae8e8cdefce2d8d09532f79d1b2e1ae4738fa6