This will allow us to measure the impact of subsequent optimizations on
the memory consumption of Chrome.

BUG=angleproject:916

Change-Id: Ib57fdfcc2950917eff33080bfb3db574595ecb6d
Reviewed-on: https://chromium-review.googlesource.com/284637Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Corentin Wallez <cwallez@chromium.org>