tree 7b6afcf6ae7b1dfc0d92b3d1963570a1f1f5acbf
parent 235e989c3c8f0078f1deb8d0ebaecc9c911b2dbc
author Noriyuki Takahashi <noriyukit@google.com> 1430606546 -0700
committer Yohei Yukawa <yukawa@google.com> 1430606546 -0700

Remove SegmenterInterface as its Segmenter is the only derived class.

Benefits:
- Virtual method call is removed (especially IsBoundary is called
  heavily so its cost is reduced)
- Reduce the number of files to be maintained

This is just a code cleanup.  Hence no behavior change should occur.

BUG=none
TEST=unittest