GitLab

This CL rolls the DEPS to pull in the latest cros_system_api, which adds
the constant for the SetAdvertisingIntervals method. It also fixes a few
nits from the CL that added the setAdvertisingIntervals code,
https://codereview.chromium.org/2353133005/

R=ortuno@chromium.org
BUG=637231

Review-Url: https://codereview.chromium.org/2390063002
Cr-Commit-Position: refs/heads/master@{#422712}