Roll src/third_party/skia 5c7a3ac0e214..5d052dac3ac1 (7 commits) (#7540)

https://skia.googlesource.com/skia.git/%2Blog/5c7a3ac0e214..5d052dac3ac1

git log 5c7a3ac0e214984ef2b857098ef354a589069a36..5d052dac3ac19e6ddff8b004541310241a4e70e5 --date=short --no-merges --format=%ad %ae %s
2019-01-21 reed@google.com hide hinting and flag enums with PAINT_FLAGS
2019-01-21 reed@google.com oops, forgot to set hinting on font
2019-01-20 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src b1e66fcbbc89..9d6cc12318d2 (17 commits)
2019-01-20 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update go_deps asset
2019-01-19 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src 3ff6f8afb698..b1e66fcbbc89 (287 commits)
2019-01-19 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com Update go_deps asset
2019-01-19 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 85ca71c2167b..7403dd2cd376 (4 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 (djsollen@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': '5c7a3ac0e214984ef2b857098ef354a589069a36',
+  'skia_revision': '5d052dac3ac19e6ddff8b004541310241a4e70e5',
 
   # 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: d3f701ef7f7c61acc3f147cfa15d3ca4
+Signature: bdc58aefab3c3cc71ee522f9be2de20d
 
 UNUSED LICENSES: