Roll src/third_party/skia a6dd1ebd42cf..2fdbeae32785 (1 commits) (#8389)

https://skia.googlesource.com/skia.git/%2Blog/a6dd1ebd42cf..2fdbeae32785

git log a6dd1ebd42cf647b34e002ddf4f676b96ceda708..2fdbeae3278592857f02a7eb2f5199f419dfa28e --date=short --no-merges --format=%ad %ae %s
2019-03-30 reed@google.com Start to unify signatures: return bool

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 (stani@google.com), and stop
the roller if necessary.

DEPS

@@ -23,7 +23,7 @@ vars = {
   'fuchsia_git': 'https://fuchsia.googlesource.com',
   'github_git': 'https://github.com',
   'skia_git': 'https://skia.googlesource.com',
-  'skia_revision': 'a6dd1ebd42cf647b34e002ddf4f676b96ceda708',
+  'skia_revision': '2fdbeae3278592857f02a7eb2f5199f419dfa28e',
 
   # 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: eef826a3d929e33a925836a09f8e5734
+Signature: b44482187b14d70ee2eadf6cf2b21aa3
 
 UNUSED LICENSES: