Roll Skia from 222c1c16317c to 3a21d497bddb (4 revisions) (#27765)

diff --git a/DEPS b/DEPS
index b41bd32..33e7145 100644
--- a/DEPS
+++ b/DEPS
@@ -27,7 +27,7 @@
   'skia_git': 'https://skia.googlesource.com',
   # OCMock is for testing only so there is no google clone
   'ocmock_git': 'https://github.com/erikdoe/ocmock.git',
-  'skia_revision': '222c1c16317c54a8701e7ccf767a1a62b4f30627',
+  'skia_revision': '3a21d497bddb26c3678b596d1ea7e30ae23fa80d',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the
diff --git a/ci/licenses_golden/licenses_skia b/ci/licenses_golden/licenses_skia
index 06b9aa6..5f4d26a 100644
--- a/ci/licenses_golden/licenses_skia
+++ b/ci/licenses_golden/licenses_skia
@@ -1,4 +1,4 @@
-Signature: 8229f8b9b25d5f68d09b05c21b35df55
+Signature: 14c174e85eca215d3dd9428dbcd25e78
 
 UNUSED LICENSES: