libbrillo: Update libchrome APIs to r395517

The new libchrome has been ported from Chromium and some APIs have
changed. Make necessary changes at call sites.

BUG: 28985443
TEST: All tests in libbrillo_test pass on dragonboard-eng build

Change-Id: Ie9343893a77b3638e03e89e3090ef61868d43c3b
9 files changed