Roll src/third_party/skia a7ad120fb6c1..efe259bb2afd (1 commits) (#9972)

https://skia.googlesource.com/skia.git
/compare/a7ad120fb6c1..efe259bb2afd

git log a7ad120fb6c12a614047e5904f78e04e1f39b1d9..efe259bb2afdd5f0e2ad76edd53e219a3fa14b4c --date=short --no-merges --format=%ad %ae %s
2019-07-20 reed@google.com add apply method to drawlooper

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 (nifong@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': 'a7ad120fb6c12a614047e5904f78e04e1f39b1d9',
+  'skia_revision': 'efe259bb2afdd5f0e2ad76edd53e219a3fa14b4c',
 
   # 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: ac28c04bc64b6d7c8f5ecb934b2efa8b
+Signature: 1e3ac8762014d3371196c437a2d20c34
 
 UNUSED LICENSES: