This allows Vulkan EGL objects such as EGL Syncs and EGL Images to give their
garbage to the renderer before destroying.

BUG=angleproject:2464

Change-Id: I59b8e1080e4292bd0856e59a928750c7e77a372e
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1562522
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>