Roll Skia from 47111d1 to f4ec452 (4 revisions)

https://skia.googlesource.com/skia.git/+log/47111d18f48d..f4ec452b7ab3

2020-06-16 [email protected] Update Go Deps
2020-06-16 [email protected] Roll SwiftShader from a6940c8e6eb0 to 8cbee4107cf1 (1 revision)
2020-06-16 [email protected] Roll Chromium from d877aabea65f to c5b7f210ebff (465 revisions)
2020-06-16 [email protected] Roll dawn from 6b3a974b42a3 to 984493d0ac07 (9 revisions)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC [email protected] on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

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': '47111d18f48d2c23a42804c628524efba7e4cd72',
+  'skia_revision': 'f4ec452b7ab35de73d394cdcf1db674a91d88559',
 
   # 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: 5553cef0fb425ceab486e701a22e3248
+Signature: 995cd5b9f2df99a19ef93353125e3a38
 
 UNUSED LICENSES: