The same for the other dEQP gyp path vars.

BUG=angleproject:998

Change-Id: I7c123dbd8983e032dc9339bf289259e6d8ec654b
Reviewed-on: https://chromium-review.googlesource.com/281009Tested-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>