Add new usage stats entries for chosen candidates

This CL introduces a set of new usage stats entries so that we can understand the distribution of the number of chosen words grouped by the row number of the candidate table where the word is displayed.

No visible change is intended.

BUG=none
TEST=unittest

git-svn-id: https://mozc.googlecode.com/svn/trunk@445 a6090854-d499-a067-5803-1114d4e51264
20 files changed
tree: 5f55f0ec57996240aa874dd4263e2a430b12f871
  1. src/