Roll Dawn from 22e5e179fa28 to 12e97ed6a789 (2 revisions)

https://dawn.googlesource.com/dawn.git/+log/22e5e179fa28..12e97ed6a789

2020-09-09 jiawei.shao@intel.com Transition bind group resource states before dispatch in compute pass
2020-09-09 enga@chromium.org Typeify ColorAttachmentIndex

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/dawn-chromium-autoroll
Please CC cwallez@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

Cq-Include-Trybots: luci.chromium.try:dawn-linux-x64-deps-rel;luci.chromium.try:dawn-mac-x64-deps-rel;luci.chromium.try:dawn-win10-x64-deps-rel;luci.chromium.try:dawn-win10-x86-deps-rel
Bug: None
Tbr: cwallez@google.com
Change-Id: Ie873cb1375c5c73b8b2791dd32221dac850c6a39
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2399858Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#805212}

DEPS

@@ -318,7 +318,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.
-  'dawn_revision': '22e5e179fa288848b059b563f1d2b7c32e804eff',
+  'dawn_revision': '12e97ed6a789a545a8e4d8b82d05fd80257936bd',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.