Roll src/third_party/skia 8be917af4313..e62bf561638c (5 commits) (flutter/engine#8568)

https://skia.googlesource.com/skia.git/%2Blog/8be917af4313..e62bf561638c

git log 8be917af4313f6021b9b8e5d2b3f4d5712967aa9..e62bf561638c60550c35e81b1606843ed74bcfef --date=short --no-merges --format=%ad %ae %s
2019-04-12 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-04-11 herb@google.com Convert the CPU mask case to use prepareForDrawing
2019-04-12 herb@google.com Revert "Convert the CPU path case to use prepareForDrawing"
2019-04-12 michaelludwig@google.com Remove debug quadType() checks
2019-04-12 michaelludwig@google.com Support domain clamping and transform matrices in YUVToRGB effects

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 (egdaniel@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': '8be917af4313f6021b9b8e5d2b3f4d5712967aa9',
+  'skia_revision': 'e62bf561638c60550c35e81b1606843ed74bcfef',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the

engine/src/flutter/ci/licenses_golden/licenses_skia

@@ -1,4 +1,4 @@
-Signature: 0f615c414aeea570c36bdf3addef58eb
+Signature: 6b8c1bcb82a7bb982213a08e24bfb734
 
 UNUSED LICENSES: