Roll src/third_party/skia 98c65fc9558f..47b7cd9a6baf (4 commits) (#7501)

https://skia.googlesource.com/skia.git/%2Blog/98c65fc9558f..47b7cd9a6baf

git log 98c65fc9558ff78a192709c8467e65a05b09293d..47b7cd9a6baf46a3e77a07f91df5f8961b7a82c7 --date=short --no-merges --format=%ad %ae %s
2019-01-15 reed@google.com remove paint::glyphsToUnichars
2019-01-15 reed@google.com remove SK_SUPPORT_LEGACY_PAINT_FONT_FIELDS for flutter
2019-01-16 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update SKP version
2019-01-16 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 d3e0e84ce7e1..c8be560bbabe (2 commits)

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 (halcanary@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': '98c65fc9558ff78a192709c8467e65a05b09293d',
+  'skia_revision': '47b7cd9a6baf46a3e77a07f91df5f8961b7a82c7',
 
   # 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: 587015a84a61fccb105a958becad7bc5
+Signature: 10af31996acdf63a36c85ba034428aac
 
 UNUSED LICENSES: