This will make space for the tessellation / ES 3.2 limit of 60 blocks.

Bug: angleproject:3572
Change-Id: Ie6cc6b24bdce2f5f67f62d11cdeefb10f3bd01d0
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2582708
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Tim Van Patten <timvp@google.com>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>