Roll src/third_party/skia e1c5ea6779f4..1fe0b86f17f3 (1 commits) (#8579)

https://skia.googlesource.com/skia.git/%2Blog/e1c5ea6779f4..1fe0b86f17f3

git log e1c5ea6779f431023c54e801c662723b3547381a..1fe0b86f17f3bd20fb4ecbf04df6b4ded785255f --date=short --no-merges --format=%ad %ae %s
2019-04-12 robertphillips@google.com Remove some unused GrSurfaceProxy methods

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 (herb@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': 'e1c5ea6779f431023c54e801c662723b3547381a',
+  'skia_revision': '1fe0b86f17f3bd20fb4ecbf04df6b4ded785255f',
 
   # 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: 220bcafa093e41505fc52fafc5573d3d
+Signature: bfef4767269d4c89ee39d518ed577b1b
 
 UNUSED LICENSES: