Roll Skia from a9af2a74c5ab to ec8c632b8c7f (2 revisions) (#162496)

https://skia.googlesource.com/skia.git/+log/a9af2a74c5ab..ec8c632b8c7f

2025-01-30 michaelludwig@google.com [graphite] Use lock-free linked list
return queue
2025-01-30 egdaniel@google.com [Graphite] Add simple cache for reusing
single Texture DescSets in Vk.

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 aaclarke@google.com,fmalita@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

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': 'a9af2a74c5ab43ec7cd7fd22ed6e7066484f8c87',
+  'skia_revision': 'ec8c632b8c7f74f385b678b23c1bd2084558040e',
 
   # 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: c4ca8ef3ea1589b0bbb3a8e12e2725a0
+Signature: 3c105bea87ae41ecb75be83abe49061f
 
 ====================================================================================================
 LIBRARY: etc1