Roll Skia from ac0723a06b53 to 8d43858ed21a (1 revision) (flutter#21692)

Author: skia-flutter-autoroll

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': 'ac0723a06b53f65aac04e3ce9e12f29b53f87315',
+  'skia_revision': '8d43858ed21a0a1b96f724f04eba510a2c44041f',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the