Check-in vulkan.h into third_party and use that instead of local sdk vulkan.h

This change is needed since once we start getting support for varrying of extensions
and newer version support in general, we need a common vulkan header to compile off of.
Otherwise we will run into problems if clients have older headers that don't include
functions/symbols we are trying to use.

Additionally it has the benefit of not needing to add if SK_VULKAN around code in
include which wants to use vulkan symbols.

This is a reupload of CL: https://skia-review.googlesource.com/13651

Bug: skia:
Change-Id: I091f526b8c4a61774c34834cd7bfb7e2c822ff5c
Reviewed-on: https://skia-review.googlesource.com/13804
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
7 files changed