Add destroy handler to SurfaceImpl. This allows the Vulkan back-end to avoid storing a reference to the VkDevice. This will extend to all the Vulkan object handle wrapper types. BUG=angleproject:1684 Change-Id: I3a98e94bc171ca27f225ce57996c3fdf9581e6e1 Reviewed-on: https://chromium-review.googlesource.com/424229 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>