Roll Skia from 77960d9addc8 to a38945abe337 (5 revisions) (#21322)

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': '77960d9addc8b89ca0fff5b84bfed0f0e4970858',
+  'skia_revision': 'a38945abe337019886f3b6bdcac4a7e3060870c2',
 
   # 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: f7c2e60282902b56340df6dcf8a6250c
+Signature: ae2f29e80f26d815ca253c2e9ec1ba3b
 
 UNUSED LICENSES: