Roll src/third_party/skia a6d723f32f32..494aa3db9e78 (1 commits) (#8787)

https://skia.googlesource.com/skia.git
/%2Blog/a6d723f32f32..494aa3db9e78

git log a6d723f32f327b7059fdd2f2f529e616c57cce33..494aa3db9e7883337c969257eef4e572366cb45f --date=short --no-merges --format=%ad %ae %s
2019-04-29 robertphillips@google.com Suppress the savelayer_clipmask test on some Android devices

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
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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': 'a6d723f32f327b7059fdd2f2f529e616c57cce33',
+  'skia_revision': '494aa3db9e7883337c969257eef4e572366cb45f',
 
   # 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: 734341024200b822ededd97fc4babc81
+Signature: 6952ca7908343a22aad278664c51b707
 
 UNUSED LICENSES: