media/gpu: Always Initialize Ozone in VEA unittest not only if --native_input.

Chrome OS Chrome VEA may create Dmabuf-backed VideoFrame using Ozone.
Therefore, VEA unittest needs to perform Ozone setup on Chrome OS.

BUG=chromium:907767
TEST=Run VEA unittest on devices (peach_pit and elm)
video_encode_accelerator_unittest \
--test_stream_data=bear-320x180.yuv:320:180:1:bear.mp4:100000:30 \
--disable_flush --single-process-tests -v=0

Change-Id: Iaf13646b3c665246862c0de7fee4487679904552
Reviewed-on: https://chromium-review.googlesource.com/c/1356444
Commit-Queue: Shuo-Peng Liao <deanliao@google.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#613630}
1 file changed