This is required by chromium tests. There is another cl
(https://swiftshader-review.googlesource.com/9952) which
will change internal uses of OUTLINE_RESOLUTION to adapt
to the rendertarget's height which will reduce the memory
usage increase caused by the current cl.

Change-Id: Iaabbbff07db9c3251ddf49cc534a1a91bab4e5f2
Reviewed-on: https://swiftshader-review.googlesource.com/9988Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>