Vulkan: Fix issue in GlslWrapper and maxVaryingVectors calculation The layout needed to also have a component qualifier so that the registerColumn wouldn't be ignored. Bug: angleproject:2460 Bug: angleproject:2483 Change-Id: Ib5b15c4dc0ce42633f4994648f1eb22d8b63336a Reviewed-on: https://chromium-review.googlesource.com/1011680 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Luc Ferron <lucferron@chromium.org>