BUG=angleproject:2464

Change-Id: I20aabeef3de6cf1fc13a29b6220e040aa83184d7
Reviewed-on: https://chromium-review.googlesource.com/1039986
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Frank Henigman <fjhenigman@chromium.org>