This hasn't been updated in a while, so there are many changes.
It should also include better validation for memory barriers.

Also includes updated builds for SPIRV Tools and glslang.
A few pull requests need to land before landing this in ANGLE.

This intermediate step rolls Vulkan again to include upstream
fixes to the layers so they no longer need to copy the parameter
validation headers to the current working directory. The prior
changed missed a second generator script.

Bug: angleproject:2237
Change-Id: Ia6767af538c50e340ea5a68c69a2863c9fd9061d
Reviewed-on: https://chromium-review.googlesource.com/840080Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>