Roll Skia from aaf863936c1b to 87fbf970569b (4 revisions) (flutter#168165)

https://skia.googlesource.com/skia.git/+log/aaf863936c1b..87fbf970569b

2025-05-01 syoussefi@google.com [vulkan] Clean up feature checks
2025-05-01 jamesgk@google.com [graphite] Lift solid color shader
expressions
2025-05-01 robertphillips@google.com [graphite] Clean up
ChromePrecompileTest
2025-05-01 robertphillips@google.com [graphite] Update Chrome Precompile
PaintOptions

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 bungeman@google.com,jsimmons@google.com,kjlubick@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: engine-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': 'aaf863936c1bf5d61ed404d578a30d456df200a2',
+  'skia_revision': '87fbf970569b21df7ef56052d484d210f4692e0c',
 
   # 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: b3a282890b26b8d54b5de1ebe4feb416
+Signature: a74cca6bcd18fcbf6692740074b406cb
 
 ====================================================================================================
 LIBRARY: etc1