Returns an OOM error to avoid
query the context for status should Map fail.

BUG=angleproject:2284

Change-Id: I4d35ef05c76fcc69bdab19f88c39a415d13ee116
Reviewed-on: https://chromium-review.googlesource.com/837519
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>