gpu: vulkan: Add missing VULKAN_EXPORT to VulkanCommandPool

Bug: none
Test: compile ozone_demo with is_component_build=true

Change-Id: Icf24cfcb5c3737d9f51136da73a9bc593937f813
Reviewed-on: https://chromium-review.googlesource.com/1146981
Commit-Queue: Michael Spang <spang@chromium.org>
Reviewed-by: Antoine Labour <piman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577542}
1 file changed