Use HashSet to hold keys in Keyboard

This partially reverts Ie0554362.

Change-Id: I0de971c5efb4e8eb093be2a0793a08bd79baee22
1 file changed
tree: da2094f32f62952e42a1bf6bcdc64427c180bfce
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk