Roll Skia from 9213e610ed92 to 840e8ea7403e (11 revisions) (#21779)

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': '9213e610ed92422d0b39dc4ff12303ca037131d2',
+  'skia_revision': '840e8ea7403ecf2385e6b009f78d83d9d413f5fd',
 
   # 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: dd91721a42021f83633b4bd9f44efac5
+Signature: 53857a7e3f9670e277f3f12a883a3a55
 
 UNUSED LICENSES: