Roll Tint from b96ed7bda4 to 3c9086d6a5 (17 revisions)

https://dawn.googlesource.com/tint.git/+log/b96ed7bda4ee..3c9086d6a5e3

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/tint-dawn
Please CC rharrison@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: dawn:947
Tbr: rharrison@google.com
Change-Id: Idf2b25dcf2293939feaff8149d59c0e7788cfcf8
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/55600
Reviewed-by: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>

DEPS

@@ -96,7 +96,7 @@ deps = {
 
   # WGSL support
   'third_party/tint': {
-    'url': '{dawn_git}/tint@b96ed7bda4ee8ee5f84535cf27430e848406def4',
+    'url': '{dawn_git}/tint@3c9086d6a5e324122460b80616bcca5a0cc50ccf',
   },
 
   # GLFW for tests and samples