Refactor SwipeTracker class

This change moves SwipeTracker out from LatinKeyboardBaseView.  Also
this introduces EventBuffer class for swipe tracking buffer.

Bug: 2910379

Change-Id: I48ff714226a248ca063cbaf9755cf45e458f7402
3 files changed
tree: b483b151149c17a9bed649e3d6083375babd6336
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. Android.mk
  6. CleanSpec.mk