This gives us insight to what we can optimize away.

BUG=angleproject:1014

Change-Id: I86208c5cbebe14905a05d0859b9e37368f4c25d4
Reviewed-on: https://chromium-review.googlesource.com/273862Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>