commit cc8ef38a22bf2e10548b61aad6baba36d82f6bb9
author Rayan Kanso <rayankans@chromium.org> Fri Dec 07 15:41:43 2018
committer Commit Bot <commit-bot@chromium.org> Fri Dec 07 15:41:43 2018
tree c8c041d18b338a5526c7eea1ff2a412d0bb5126c
parent 7ef6483d5ecd6ffe32d39059b9562c4dec404517

[Background Sync] Add connectivity check before dispatching sync event

There are a few disk reads that take place between regaining
connectivity and dispatching the event. This adds another check right
before dispatching the event to increase the reliability of the sync events

Also collect how often this happens via UMA (until M74).

Change-Id: I3aaf408bbb45b920a02236487df5246e8499500e
Reviewed-on: https://chromium-review.googlesource.com/c/1361860
Commit-Queue: Rayan Kanso <rayankans@chromium.org>
Reviewed-by: Jesse Doherty <jwd@chromium.org>
Reviewed-by: Peter Beverloo <peter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#614705}