Roll Clang from 49f39b349db1 to 9d7449a82b83

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/clang-dart-sdk
Please CC [email protected],[email protected],[email protected] on the revert to ensure that a human
is aware of the problem.

To file a bug in Clang: https://bugs.fuchsia.dev/p/fuchsia/issues/list?q=component%3AToolchain
To file a bug in Dart SDK: https://github.com/dart-lang/sdk/issues

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Cq-Include-Trybots: luci.dart.try:dart-sdk-linux-try;luci.dart.try:dart-sdk-mac-try;luci.dart.try:dart-sdk-mac-arm64-try;luci.dart.try:dart-sdk-win-try
Change-Id: I95b1b52e6177f8c13e9a477ce3634abc50cdc32a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/450200
Reviewed-by: Alexander Markov <[email protected]>
Reviewed-by: Alexander Aprelev <[email protected]>
Commit-Queue: Alexander Markov <[email protected]>

Author: DEPS Autoroller

DEPS

@@ -75,7 +75,7 @@ vars = {
   "jsc_tag": "version:299913",
 
   # https://chrome-infra-packages.appspot.com/p/fuchsia/third_party/clang
-  "clang_version": "git_revision:49f39b349db181ca516eb0253462105ff0e2c634",
+  "clang_version": "git_revision:9d7449a82b83ee589b8af8d6f86525727788b3b9",
 
   # https://chrome-infra-packages.appspot.com/p/gn/gn
   "gn_version": "git_revision:81b24e01531ecf0eff12ec9359a555ec3944ec4e",