tree 04a3edb2dc219d9c1c84f51432f22745ffd42099
parent 0e3517937dd7fda12ca837159b76a17d30239052
author Paul Wankadia <junyer@google.com> 1552900354 -0700
committer Paul Wankadia <junyer@google.com> 1552900459 +0000

Get rid of `using std::string;`. (part 7 of 7)

Change-Id: I2df2ec398bb0a5d9ac9019f575c494107a82fbe3
Reviewed-on: https://code-review.googlesource.com/c/re2/+/39136
Reviewed-by: Paul Wankadia <junyer@google.com>