Roll Skia from 8796ee7d1c66 to 3d938d4b00ee (3 revisions) (flutter/engine#47042)

https://skia.googlesource.com/skia.git/+log/8796ee7d1c66..3d938d4b00ee

2023-10-18 skia-autoroll@skia-public.iam.gserviceaccount.com Roll SwiftShader from 400ac3a175a6 to 91b84ac6d8ea (1 revision)
2023-10-18 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Skia Infra from d42ad20d2b50 to 0cf4951e9bc0 (8 revisions)
2023-10-18 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Dawn from b665b7fda7cf to 5d5be56d5117 (17 revisions)

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,jimgraham@google.com,rmistry@google.com,scroggo@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

DEPS

@@ -18,7 +18,7 @@ vars = {
   'llvm_git': 'https://llvm.googlesource.com',
   # OCMock is for testing only so there is no google clone
   'ocmock_git': 'https://github.com/erikdoe/ocmock.git',
-  'skia_revision': '8796ee7d1c66a053d78e260c21873d099df02e24',
+  'skia_revision': '3d938d4b00eed8364e55570e788b19c4a7237b34',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.

engine/src/flutter/ci/licenses_golden/licenses_skia

@@ -1,4 +1,4 @@
-Signature: 43ca5e2d6a4377aa77d2390a7e622aea
+Signature: f1238a3160899f5cdb88148f22bae3ac
 
 ====================================================================================================
 LIBRARY: etc1