am ec2981a4: Fix a bug on upgrading user history scheme

* commit 'ec2981a487b91a682caade486700d8b2377a5c52':
  Fix a bug on upgrading user history scheme
tree: 6dc9961014e3da515e5e48b1e22a8629d979179c
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk