Roll Dawn from 2831f0584028 to b6b0090b5017 (11 revisions)

https://dawn.googlesource.com/dawn.git/+log/2831f0584028..b6b0090b5017

2021-02-09 kainino@chromium.org Revert "Vulkan: Fallback to XCB for Xlib surfaces"
2021-02-09 enga@chromium.org Dawn wire fuzzer: Fix nullptr dereference
2021-02-09 dsinclair@chromium.org Remove the use_tint_inspector toggle.
2021-02-09 cwallez@chromium.org Vulkan: Fallback to XCB for Xlib surfaces
2021-02-09 senorblanco@chromium.org Skip testing of SNORM formats where non-readable.
2021-02-09 dawn-autoroll@skia-public.iam.gserviceaccount.com Roll Tint from 4a7981e300f3 to 7b7d69854d8d (19 revisions)
2021-02-09 cwallez@chromium.org Fix compilation using CMake on Linux
2021-02-09 cwallez@chromium.org Vulkan: VK_EXT_subgroup_size_control should be chained on the stage
2021-02-08 senorblanco@chromium.org Only default ANGLE to swiftshader if envvar empty.
2021-02-08 bajones@chromium.org Add ability to generate typedefs from dawn.json
2021-02-08 dawn-autoroll@skia-public.iam.gserviceaccount.com Roll Tint from a2fa690cda46 to 4a7981e300f3 (1 revision)

Also rolling transitive DEPS:
  https://dawn.googlesource.com/tint from a2fa690cda46 to 7b7d69854d8d

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 kainino@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: chromium:1175448,chromium:1175535
Tbr: kainino@google.com
Change-Id: I97cb58e129c9d235b28cd3f7fc323b83d67953d0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2686589
Reviewed-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@{#852456}