Roll src/third_party/skia ac09f7cd7a28..c683912173bb (2 commits) (#18230)

DEPS

@@ -26,7 +26,7 @@ vars = {
   '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': 'ac09f7cd7a283292e81d57e94936dfd3cc8ca018',
+  'skia_revision': 'c683912173bbb777984d8626378edcecc7fbb482',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the

ci/licenses_golden/licenses_skia

-Signature: db5be36e6d2c3a4361140b4ace914325
+Signature: 743cb10358acb347de58a08618a28a3d
 
 UNUSED LICENSES: