GitLab

This reverts commit cfe635ce.

Reason for revert: This breaks ARC++ (App and CTS/GTS). See detail in crbug.com/874074

Original change's description:
> media/gpu shared memory: update v4l2 UnalignedSharedMemory
> 
> Uses the new WritableUnalignedMapping class, which changes the ownership
> semantics. See the bug for details on the overall plan.
> 
> Bug: 849207
> Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
> Change-Id: Idacc45e249291bd9d42ff7bf9a8abffe8636f6cf
> Reviewed-on: https://chromium-review.googlesource.com/1117692
> Commit-Queue: Matthew Cary <mattcary@chromium.org>
> Reviewed-by: Daniele Castagna <dcastagna@chromium.org>
> Reviewed-by: Alexandr Ilin <alexilin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#582270}

TBR=dcastagna@chromium.org,mattcary@chromium.org,alexilin@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 849207
Change-Id: I1fdf459f8b480da412854d0a86ece9a0ac86a1c8
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Reviewed-on: https://chromium-review.googlesource.com/1176841Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Commit-Queue: Hirokazu Honda <hiroh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#583487}