GitLab

Allows a DWriteFontProxy to have a thread-safe way to send IPCs even
when it's not on main thread.

Bug: 722393
Change-Id: I6f840898bce9340ed5c12dcb43ae74ea3bbe7f47
Reviewed-on: https://chromium-review.googlesource.com/587415
Commit-Queue: Fernando Serboncini <fserb@chromium.org>
Reviewed-by: Antoine Labour <piman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#490781}