Roll Skia from 34b19c575066 to 6253b5787df8 (7 revisions) (#21159)

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': '34b19c575066dbb1e4a688602c92547de9d253c8',
+  'skia_revision': '6253b5787df8771452a9b582b237a504278e1c11',
 
   # 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: c076281ccaaafb010afa10f355ad0d72
+Signature: 129dad680d6e513c5aebb15e459e191b
 
 UNUSED LICENSES: