Roll src/third_party/skia c6a17104ad68..921ec976556c (31 commits) (flutter#6546)

https://skia.googlesource.com/skia.git/+log/c6a17104ad68..921ec976556c


Created with:
  gclient setdep -r src/third_party/skia@921ec976556c

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.

Author: skia-flutter-autoroll

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': 'c6a17104ad6878e5f7cdacd885d2e3eff7435a30',
+  'skia_revision': '921ec976556c0fc65b2ead6c8209e3d7466792e4',
 
   # 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: 35cde079d4f1dc7f0262a6e9a6f4c59d
+Signature: e5ce4475f43e5b88cbbddc19f9a46b31
 
 UNUSED LICENSES:
 
@@ -5131,6 +5131,7 @@ LIBRARY: skia
 ORIGIN: ../../../third_party/skia/include/docs/SkPDFDocument.h + ../../../third_party/skia/LICENSE
 TYPE: LicenseType.bsd
 FILE: ../../../third_party/skia/include/docs/SkPDFDocument.h
+FILE: ../../../third_party/skia/src/gpu/GrPathRendering_none.cpp
 FILE: ../../../third_party/skia/src/utils/SkUTF.cpp
 FILE: ../../../third_party/skia/src/utils/SkUTF.h
 ----------------------------------------------------------------------------------------------------