Start using historical info for decaying.

Bug: 11073222

Change-Id: Iad5f42d7268939df35589c4900bf6f4425adaa3f
20 files changed
tree: 203b9cad44803336483d0e0c9822a599607e20df
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk