Use movement on the trackpad instead of on screen for trackpad gestures used for gesture nav

Bug: 254783214
Test: https://recall.googleplex.com/projects/3388b17c-d22f-46f8-b140-a102690377b4/sessions/f3311fbc-d8cf-4f19-b83c-8626aa285452
Change-Id: Iad2da5831af85dd3647e1e31b42fea0a6302b49c