Roll src/third_party/skia c2da70f..8d1b0bc (2 commits) (#10937)

https://skia.googlesource.com/skia.git/+log/c2da70fbef53..8d1b0bceedd6

git log c2da70f..8d1b0bc --date=short --no-merges --format='%ad %ae %s'
2019-08-12 halcanary@google.com experimental/editor/README.md fix
2019-08-12 sergeyu@google.com Reland: Enable YCbCr sampler support on platforms other than Android

Created with:
  gclient setdep -r src/third_party/skia@8d1b0bceedd6

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, who should
be CC'd on the roll, and stop the roller if necessary.


Bug: None
TBR=scroggo@google.com

Author: skia-flutter-autoroll

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': 'c2da70fbef532693b95d2e72d8408acfe31e0e02',
+  'skia_revision': '8d1b0bceedd630e6915f4c9eb518f4fdc583337f',
 
   # 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

@@ -1,4 +1,4 @@
-Signature: dc36f9cdb0e142e7adf99d5f942edc8c
+Signature: 5eb9d97890c6bc943cf24dbe4c0cd1ac
 
 UNUSED LICENSES: