BUG=angleproject:1343

Change-Id: I04180135dcd3aac2d40dc3f6d32b1aad362c69d1
Reviewed-on: https://chromium-review.googlesource.com/334920Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Frank Henigman <fjhenigman@chromium.org>