Roll src/third_party/skia 9c23a9e790b2..a47c48ef6bce (1 commits) (flutter/engine#10896)

https://skia.googlesource.com/skia.git/+log/9c23a9e790b2..a47c48ef6bce

git log 9c23a9e790b2..a47c48ef6bce --date=short --no-merges --format='%ad %ae %s'
2019-08-12 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader f046402b1480..34c59c9b88b7 (14 commits)

Created with:
  gclient setdep -r src/third_party/skia@a47c48ef6bce

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

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': '9c23a9e790b2f29b2cf204e67dbc67a363d0ce74',
+  'skia_revision': 'a47c48ef6bce4632b797cb08f294f88ab57026a0',
 
   # 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: f50b3e80f9bfee9c16efaed04c86becb
+Signature: 6565c09f47c70af6fc63cbac58336c09
 
 UNUSED LICENSES: