Vulkan: Roll VK deps forward Roll VK Headers/Tools/Loader/ValidationLayers forward. There's a build improvement as well as many new checks. Added new source file dep, convert_to_renderpass2.cpp, used by core_ validation for added RenderPass2 checks. Bug: angleproject:2937 Bug: chromium:845519 Change-Id: Id5c30c5bfc684c365a8ad97c3289bccc02afb3b3 Reviewed-on: https://chromium-review.googlesource.com/c/1305673 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Tobin Ehlis <tobine@google.com>