Roll src/third_party/skia/ d8a189fca..5226b777e (2 commits; 1 trivial rolls) (#5172)

Auto-roller completed checks. Merging.

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': 'd8a189fca3cdfa064de75a280d5af34cc5026bbe',
+  'skia_revision': '5226b777edeef1b8168c9cf7f4fb34a0fdc606a1',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the

travis/licenses_golden/licenses_third_party

-Signature: 7cc17682e6b6e0b68fc9c876eb587159
+Signature: 74e81516618f30e45f76acc3d9cb9b68
 
 UNUSED LICENSES: