BUG=angleproject:1386

Change-Id: I44da3a4cb2b23f98978349f26b80d6bb3a6dc8b5
Reviewed-on: https://chromium-review.googlesource.com/388784
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>