Roll Dawn from fb6c21547e6c to 12c78cbc820a (1 revision)

https://dawn.googlesource.com/dawn.git/+log/fb6c21547e6c..12c78cbc820a

2020-12-14 dawn-autoroll@skia-public.iam.gserviceaccount.com Roll Tint from 2abecbba1670 to 24bbbbb25f7d (1 revision)

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 sarahmashay@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: sarahmashay@google.com
Change-Id: Id690d1e380b9b51b169fb371eeca9166217b7eb2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2590073Reviewed-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@{#836648}

DEPS

@@ -326,7 +326,7 @@ 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': 'fb6c21547e6c5bc2053c15169769397e6584c9d2',
+  'dawn_revision': '12c78cbc820a52c4ca2da8e92d9faf815d9b3e93',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.