Make auth credentials notification not disappear.
Make auth credentials notification not disappear.

The notification that signals when signin credentials need to be refreshed
disappears too quickly.

BUG=554349

Review URL: https://codereview.chromium.org/1479453005

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#361947}

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