Roll Skia from a1d9b83034ac to d503bc9c6e46 (3 revisions) (#50587)

https://skia.googlesource.com/skia.git/+log/a1d9b83034ac..d503bc9c6e46

2024-02-13 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Skia Infra from 996f56b64f8b to 42673e90d5d2 (9 revisions)
2024-02-13 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Dawn from b10254f79f46 to 10bc0e035997 (16 revisions)
2024-02-13 skia-autoroll@skia-public.iam.gserviceaccount.com Roll SK Tool from 2b29178c7ccf to 42673e90d5d2

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC brianosman@google.com,chinmaygarde@google.com,johnstiles@google.com,rmistry@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Skia: https://bugs.chromium.org/p/skia/issues/entry
To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

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

Author: skia-flutter-autoroll

DEPS

@@ -14,7 +14,7 @@ vars = {
   'flutter_git': 'https://flutter.googlesource.com',
   'skia_git': 'https://skia.googlesource.com',
   'llvm_git': 'https://llvm.googlesource.com',
-  'skia_revision': 'a1d9b83034ace0f6765aacaab3c0fdb37869a4b9',
+  'skia_revision': 'd503bc9c6e46b399fe7f89057c21b7c393ccd845',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.

ci/licenses_golden/licenses_skia

@@ -1,4 +1,4 @@
-Signature: a1708fd7b5e7fd9ad8513beb70cdcbf0
+Signature: d951ed64035e29b9699f216c6f5de4a2
 
 ====================================================================================================
 LIBRARY: etc1