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.
Bug: skia:
Change-Id: I674a253308596dc75bd23574984ae933923679f9
Reviewed-on: https://skia-review.googlesource.com/13651
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
edbb7d8860