Roll Skia from d965fc1fd319 to 4019d8957cff (2 revisions) (#52682)

https://skia.googlesource.com/skia.git/+log/d965fc1fd319..4019d8957cff

2024-05-08 brianosman@google.com Reland "Update clang_win and win_toolchain assets"
2024-05-08 kjlubick@google.com Fix experimental use of generate_cpp_files_for_headers

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,egdaniel@google.com,rmistry@google.com,zra@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': 'd965fc1fd31926d65514189b5f49512d53b3f777',
+  'skia_revision': '4019d8957cffe178af3bb5e7834e6a419d0088ba',
 
   # 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: c5c51f42f0f5f0d4128cd704127c8a5a
+Signature: 12581bbedc783b541d655b33cbe83347
 
 ====================================================================================================
 LIBRARY: etc1

sky/packages/sky_engine/LICENSE

@@ -32293,7 +32293,7 @@ Exhibit B - "Incompatible With Secondary Licenses" Notice
   This Source Code Form is "Incompatible With Secondary Licenses", as
   defined by the Mozilla Public License, v. 2.0.
 
-You may obtain a copy of this library's Source Code Form from: https://dart.googlesource.com/sdk/+/b7cad2edae4bcbe05332c9956a04692d19798904
+You may obtain a copy of this library's Source Code Form from: https://dart.googlesource.com/sdk/+/673b3aa8558a4af94a6c9f424b7c4569899bef9b
 /third_party/fallback_root_certificates/
 
 --------------------------------------------------------------------------------