Replace DB thread usage in WebDataService with task scheduler.
Bug: 667892
Change-Id: I368b234d63c6cf46e2b32532ae11e011b04abbc6
Reviewed-on: https://chromium-review.googlesource.com/566181
Reviewed-by: Paweł Hajdan Jr. <phajdan.jr@chromium.org>
Reviewed-by: Nicolas Zea <zea@chromium.org>
Reviewed-by: Gabriel Charette <gab@chromium.org>
Reviewed-by: Vaclav Brozek <vabr@chromium.org>
Reviewed-by: Martin Šrámek <msramek@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Reviewed-by: mahmadi <mahmadi@chromium.org>
Reviewed-by: Selim Gurun <sgurun@chromium.org>
Reviewed-by: Robert Liao <robliao@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#490312}17 files changed
