Revert "Roll Tint from 7b750dc7337d to dbcc1e0e804e (11 revisions)"

This reverts commit 4ec67b1c.

Reason for revert: Breaks Dawn Bots.

Original change's description:
> Roll Tint from 7b750dc7337d to dbcc1e0e804e (11 revisions)
>
> https://dawn.googlesource.com/tint.git/+log/7b750dc7337d..dbcc1e0e804e
>
> 2020-11-10 rharrison@chromium.org [inspector] Extract Sampled Texture data
> 2020-11-10 dsinclair@chromium.org [hlsl-writer] Emit texture types
> 2020-11-10 dsinclair@chromium.org [spirv-writer] Hash names
> 2020-11-09 bclayton@google.com wsgl parser: Have Expect & Maybe operator-> deref
> 2020-11-09 bclayton@google.com wsgl parser: Add ParserImpl::Maybe<T>
> 2020-11-09 bclayton@google.com wsgl parser: Add ParserImpl::Expect<T>
> 2020-11-09 bclayton@google.com wsgl parser: Migrate more code to use expect & match
> 2020-11-09 bclayton@google.com wsgl parser: expect for storage_class
> 2020-11-09 bclayton@google.com wsgl parser: expect for variable_ident_decl
> 2020-11-09 sarahmashay@google.com [validation] relax rule v-0002: return is mandatory for non-void functions
> 2020-11-09 bclayton@google.com wsgl parser: Remove pointless nullptr checks
>
> If this roll has caused a breakage, revert this CL and stop the roller
> using the controls here:
> https://autoroll.skia.org/r/tint-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
>
> Bug: None
> Tbr: sarahmashay@google.com
> Change-Id: Ie9c4ae8f0af8baacbe90d08aaba4e9cac233a22a
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2530974
> 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@{#826083}

TBR=chromium-autoroll@skia-public.iam.gserviceaccount.com,sarahmashay@google.com

Change-Id: If5ec34d94eceb4c10291ea60bdf617d936973bd7
No-Tree-Checks: true
No-Try: true
Bug: 1147959
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2533417
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
Auto-Submit: Dan Sinclair <dsinclair@google.com>
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#826461}

DEPS

@@ -359,7 +359,7 @@ vars = {
   'ukey2_revision': '0275885d8e6038c39b8a8ca55e75d1d4d1727f47',
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.
-  'tint_revision': 'dbcc1e0e804ed19596f43d2c2663a5b11b9977de',
+  'tint_revision': '7b750dc7337d42c16cf7c3ca8b80f00b317f1298',
 
   # TODO(crbug.com/941824): The values below need to be kept in sync
   # between //DEPS and //buildtools/DEPS, so if you're updating one,