GitLab

The old function assumed that a async mojo calls between two sync calls
would happen in sequence. This is not true at all.

Bug: 872076
Change-Id: I9b7f78be76352c6133638665c60b156902fff1eb
Reviewed-on: https://chromium-review.googlesource.com/1176078
Commit-Queue: Fernando Serboncini <fserb@chromium.org>
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Reviewed-by: Ken Rockot <rockot@chromium.org>
Cr-Commit-Position: refs/heads/master@{#583386}