Roll Skia from 08f5311ae142 to 821a84558bd4 (1 revision) (#23818)

diff --git a/DEPS b/DEPS
index 9d50962..4f099b4 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': '08f5311ae142a8fe86d2e055080287d5345705ac',
+  'skia_revision': '821a84558bd40fe0c73ed0c15a400372bbbbe51d',
 
   # 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 f8fb6d4..2752356 100644
--- a/ci/licenses_golden/licenses_skia
+++ b/ci/licenses_golden/licenses_skia
@@ -1,4 +1,4 @@
-Signature: 734407a3dc575d8e62aeb9c005347840
+Signature: c2a40579caa23ef80ce17b61af39ff05
 
 UNUSED LICENSES: