Roll src/third_party/skia b851469b8e96..afd2c10c989c (2 commits) (#9573)

https://skia.googlesource.com/skia.git
/%2Blog/b851469b8e96..afd2c10c989c

git log b851469b8e964cf20ca911ba2acc4353084c08eb..afd2c10c989ce85cb9e7f8e05cb0df0ae50a1cfd --date=short --no-merges --format=%ad %ae %s
2019-06-27 fmalita@chromium.org [skottie] Use hybrid bounds for custom Shaper VAlign modes
2019-06-27 fmalita@chromium.org [skottie] Use explicit font ascent in Shaper

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-flutter-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff (djsollen@google.com), and stop
the roller if necessary.

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': 'b851469b8e964cf20ca911ba2acc4353084c08eb',
+  'skia_revision': 'afd2c10c989ce85cb9e7f8e05cb0df0ae50a1cfd',
 
   # 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: ad755e0f825f05a474a393cc529c5e68
+Signature: a9ccca5ac9ec038c0b70eb657415e9c5
 
 UNUSED LICENSES: