This extension is used by Chrome.

BUG=angleproject:2853

Change-Id: Ie8d4ba07857c581a4ec3f90faabdf747b6b52445
Reviewed-on: https://chromium-review.googlesource.com/1246263
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>