AlternativeService - change the expiration time from 1 day to 30 days.
AlternativeService - change the expiration time from 1 day to 30 days.

BUG=570105
R=rch@chromium.org

Review URL: https://codereview.chromium.org/1525993004

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#365435}

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk