Roll src/third_party/skia a2cec203eea8..84a53268af92 (1 commits) (#8366)

https://skia.googlesource.com/skia.git/%2Blog/a2cec203eea8..84a53268af92

git log a2cec203eea8d866ccd4e3d71f060f36210e3e1b..84a53268af92ca5a620c000a6199513350fdde36 --date=short --no-merges --format=%ad %ae %s
2019-03-29 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 51562f15f4ad..5bb034db6243 (1 commits)

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': 'a2cec203eea8d866ccd4e3d71f060f36210e3e1b',
+  'skia_revision': '84a53268af92ca5a620c000a6199513350fdde36',
 
   # 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: 3edf6264970224873aac77187e0c78ce
+Signature: ea28935b3eb5f75f692aab54be3e904b
 
 UNUSED LICENSES: