GitLab

The method of calling functions now uses a macro to hide the
gpu::VulkanFunctionPointers. Fix the ozone_demo build after
this change.

Bug: none
Test: compile
Change-Id: Ia5aa9666eb3925135f89ece810862492b305c403
Reviewed-on: https://chromium-review.googlesource.com/1124991Reviewed-by: Chris Blume <cblume@chromium.org>
Commit-Queue: Michael Spang <spang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#572368}