GitLab

Retrieve the IOSurface backing a CVPixelBuffer and, if it exists,
construct a GpuMemoryBufferHandle to send via
OnIncomingCapturedExternalBuffer.

Bug: 1125879
Change-Id: I541285d6ccf08d71c93bc29cce2ed39f00c34cdf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2412994Reviewed-by: Markus Handell <handellm@google.com>
Reviewed-by: Dan Sanders <sandersd@chromium.org>
Commit-Queue: ccameron <ccameron@chromium.org>
Cr-Commit-Position: refs/heads/master@{#808512}