Revert "Roll Dawn from 2b450c2126f4 to 95f2a9c5ab9f (7 revisions)"

This reverts commit 03b8201abafbb7c8bb66c4cd70f7571e57e0804f.

Reason for revert: break developer checkout
https://bugs.chromium.org/p/chromium/issues/detail?id=1466717

Original change's description:
> Roll Dawn from 2b450c2126f4 to 95f2a9c5ab9f (7 revisions)
>
> https://dawn.googlesource.com/dawn.git/+log/2b450c2126f4..95f2a9c5ab9f
>
> 2023-07-20 dawn-autoroll@skia-public.iam.gserviceaccount.com Roll SwiftShader from 4e401427f8dd to 4a260c12b8c1 (1 revision)
> 2023-07-20 avi@chromium.org Don't allow Dawn to be compiled as ARC
> 2023-07-20 bclayton@google.com [tint][resolver] Check variable use is not templated
> 2023-07-20 dawn-autoroll@skia-public.iam.gserviceaccount.com Roll DirectX Shader Compiler from 5d796bf3f777 to 9021cae50ba9 (3 revisions)
> 2023-07-20 rharrison@chromium.org Remove SISO and enable downloading reclient configs
> 2023-07-20 bclayton@google.com [tint][ir] Further simplify FromProgram
> 2023-07-20 jrprice@google.com [ir][spirv-writer] Implement pack/unpack builtins
>
> 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,lokokung@google.com on the revert to ensure that a human
> is aware of the problem.
>
> To file a bug in Dawn: https://bugs.chromium.org/p/dawn/issues/entry
> To file a bug in Chromium: https://bugs.chromium.org/p/chromium/issues/entry
>
> 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/main/autoroll/README.md
>
> Cq-Include-Trybots: luci.chromium.try:dawn-android-arm-deps-rel;luci.chromium.try:dawn-android-arm64-deps-rel;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:733237
> Tbr: lokokung@google.com
> Change-Id: I8a717326d5f7ffed327c9944fcd9d5db56511529
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4706713
> Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
> Bot-Commit: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
> Cr-Commit-Position: refs/heads/main@{#1173196}

Bug: chromium:733237, chromium:1466717
Change-Id: I6eb94416b4aec2f8034695b487c15a1733815576
Cq-Include-Trybots: luci.chromium.try:dawn-android-arm-deps-rel;luci.chromium.try:dawn-android-arm64-deps-rel;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
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4707284
Auto-Submit: Fumitoshi Ukai <ukai@google.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1173272}