Keisuke Kuroyanagi 620a05ae59 Support bigram historical information migration.
Bug: 13406708
Change-Id: I4bae53e43cb7653eac3b5bd13da2d2bc8aaf88a9
2014-05-13 01:28:30 +09:00
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2012-01-13 15:25:28 +09:00
2014-03-25 13:02:09 +09:00