[vr] Fix AHardwareBuffer GpuMemoryBuffer lifecycle

Creating an AHardwareBuffer-backed SharedMemoryHandle from a file descriptor
takes ownership and needs to auto-close that FD when requested, specifically
when constructed from IPC.

Also fix a reference leak when the received AHardwareBuffer is used to
create an EGLImage since that also increments the refcount.

BUG=761432

Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: Ia7939ca4e846b1348b0a52444b551be65377ef6f
Reviewed-on: https://chromium-review.googlesource.com/783845
Reviewed-by: agrieve <agrieve@chromium.org>
Reviewed-by: David Reveman <reveman@chromium.org>
Commit-Queue: Klaus Weidner <klausw@chromium.org>
Cr-Commit-Position: refs/heads/master@{#518828}

CrOS-Libchrome-Original-Commit: a315971d9453e4d28f8ae6f84e1293a4ec08fdd3
1 file changed
tree: 1f844b3099d4c6905e35cd787b205093392aee2a
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/