GitLab

VideCaptureDeviceFuchsia wasn't handling sysmem buffer collection
allocation failures. Fixed it to handle them properly. Also added a
unittest.

Bug: 1111761
Change-Id: Ic56f570dfd8826a3663c5752db15487289bff234
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2335651
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: David Dorwin <ddorwin@chromium.org>
Auto-Submit: Sergey Ulanov <sergeyu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#798265}