tree 2df828610f9862ad2bd4119f333246bfdd2800c3
parent 67bce690decdb507b13e14050661f8b9ebfcfe6c
author Paul Wankadia <junyer@google.com> 1565881731 -0700
committer Paul Wankadia <junyer@google.com> 1565881807 +0000

Upgrade Travis CI from Trusty to Xenial.

Change-Id: I8d49b93887640310e37c89fbaa643e308e187118
Reviewed-on: https://code-review.googlesource.com/c/re2/+/44150
Reviewed-by: Paul Wankadia <junyer@google.com>