Handle DeviceLostCallback once DeviceLost error occurs.
Disallow any other commands or actions on device to happen after device
has been lost.
Bug: dawn:68
Change-Id: Icbbbadf278cae5e6213050d00439118789c863dc
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/12801
Commit-Queue: Natasha Lee <natlee@microsoft.com>
Reviewed-by: Austin Eng <enga@chromium.org>