GitLab

The task context is useful to debug mojo memory leaks since IPC messages
are tagged with contexts

BUG=874530

Change-Id: Id59d016f963f41fdeda6af69b3c470f0101dbfe7
Reviewed-on: https://chromium-review.googlesource.com/1232683Reviewed-by: Erik Chen <erikchen@chromium.org>
Commit-Queue: Siddhartha S <ssid@chromium.org>
Cr-Commit-Position: refs/heads/master@{#593458}