Remove legacy base/hash_tables.h in favor of C++11

With this CL all the uses of base/hash_tables.h are replaced with std::unordered_set and std::unordered_map in favor of C++11.

No user-visible behavior change is intended.

BUG=none
TEST=unittest

git-svn-id: https://mozc.googlecode.com/svn/trunk@521 a6090854-d499-a067-5803-1114d4e51264
11 files changed
tree: f8d02519f9cd8d4b015a8dc39f7c7b57192cb897
  1. src/