GitLab

Added android utility functions to export/import sync FD from/to a
vulkan semaphore. Added unittests.

Bug: 891060
Change-Id: I2fcac73018fe91afae0ac141fdd5e40244451b15
Reviewed-on: https://chromium-review.googlesource.com/c/1332608Reviewed-by: Antoine Labour <piman@chromium.org>
Commit-Queue: vikas soni <vikassoni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#611399}