It's possible for multiple threads to touch mFenceRecycler so need to protect it with a mutex to prevent race conditions. Bug: b/168744476 Change-Id: I9898d2e9ebf0974581a1074cbda5be41a09cd790 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2415401Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Tim Van Patten <timvp@google.com> Commit-Queue: Courtney Goeltzenleuchter <courtneygo@google.com>
