Roll Dawn from da1f66c8cee1 to 464aaeb55864 (2 revisions)

https://dawn.googlesource.com/dawn.git/+log/da1f66c8cee1..464aaeb55864

2020-11-14 enga@chromium.org Add InjectValidationError to command encoder
2020-11-14 enga@chromium.org Add end2end tests flags --enable-toggles and --disable-toggles

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: I8cfcd3fe9cd9ac5e0150e0225a0557de45cd5615
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2538342Reviewed-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@{#827581}

DEPS

@@ -324,7 +324,7 @@ 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': 'da1f66c8cee18677bf921181613732a9378e9864',
+  'dawn_revision': '464aaeb55864832f338717e216324123438b8508',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.