tree 334d589fa96aea31159eec200ca46f50dbceb700
parent ddef7a04a2d3f66b3914576caf6057b43e135e3d
author Jiawei Shao <jiawei.shao@intel.com> 1601172052 +0000
committer Commit Bot service account <commit-bot@chromium.org> 1601172052 +0000

Report more detailed error information for the failures of mapAsync

This patch adds two new buffer map async status "destroyed before
callback" and "unmapped before callback" to replace the status "unknown"
so that the developers can get more details when meeting such errors in
the call of buffer mapAsync.

Note that this patch still preserves "unknown" as it is still being used
in Chromium.

BUG=dawn:533
TEST=dawn_unittests

Change-Id: I12deefb49311ea6adea72c24e4e40797dd7eb4a1
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/28883
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>