Roll Skia from 3dce2d4ee4f3 to 4857e876d8cf (1 revision) (flutter/engine#43882)

https://skia.googlesource.com/skia.git/+log/3dce2d4ee4f3..4857e876d8cf

2023-07-21 skia-autoroll@skia-public.iam.gserviceaccount.com Roll Skia Infra from a1951225a465 to ac6948eb5d9f (4 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 bdero@google.com,brianosman@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://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

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': '3dce2d4ee4f38948aaf32d43c87220c458d6dc5b',
+  'skia_revision': '4857e876d8cffc43d125c8356b4b0eab268dbe65',
 
   # 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: f99754defa70f62fd5fc847eba6dec90
+Signature: ab58d7a6900a71cfc802e4169c167668
 
 ====================================================================================================
 LIBRARY: etc1