Roll src/third_party/skia 8ac78aa6df3f..feae867f8425 (1 commits) (#8845)

https://skia.googlesource.com/skia.git
/%2Blog/8ac78aa6df3f..feae867f8425

git log 8ac78aa6df3f5c36794213491295f07f38c9f131..feae867f8425e7fb5e819257919845f13f164711 --date=short --no-merges --format=%ad %ae %s
2019-05-03 benjaminwagner@google.com Add harfbuzz to tools/install_dependencies.sh

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 (ethannicholas@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': '8ac78aa6df3f5c36794213491295f07f38c9f131',
+  'skia_revision': 'feae867f8425e7fb5e819257919845f13f164711',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the