Refactoring patch which moves code only. Work and full description
will follow in a subsequent CL.

BUG=angleproject:1202

Change-Id: I60346c516209a0517fc2bac38e0d04ff56bcbc3c
Reviewed-on: https://chromium-review.googlesource.com/311260Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>