Use PrevWordsInfo to add/remove n(bi)-gram in native code.

Bug: 14119293
Bug: 14425059
Change-Id: I4b9a46bfd670b35195418eaee51456d44fb91b6d
14 files changed
tree: 7498a3ae3d1f13bc1076131b6e44a27ca61e4104
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk