GitLab

It was used to check if "GCM is enabled" by calling a special API on the
Sync service, but in practice this has always been true for years.
Removing this code will let us (eventually) shut down this API.

Bug: 1009361
Change-Id: I9de53187fc85e5b4eac0a7c566aafe36dbb3442c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2017429Reviewed-by: Ramin Halavati <rhalavati@chromium.org>
Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Reviewed-by: Peter Beverloo <peter@chromium.org>
Commit-Queue: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#735834}