Roll src/third_party/skia b46c4d0..3aca39d (12 commits) (flutter#6643)

https://skia.googlesource.com/skia.git/+log/b46c4d0925ad..3aca39df7b22


Created with:
  gclient setdep -r src/third_party/skia@3aca39df7b22

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.

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': 'b46c4d0925ad4ee016fa150893ed9a89a4b74cf8',
+  'skia_revision': '3aca39df7b22276674c9abad62ac0555aa7ee821',
 
   # 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: 2eaadab5c99a9d8080acce23726ed195
+Signature: 347c3d27687b63de5c16b1956003b84c
 
 UNUSED LICENSES:
 
@@ -2755,8 +2755,6 @@ FILE: ../../../third_party/skia/gm/texteffects.cpp
 FILE: ../../../third_party/skia/gm/tilemodes.cpp
 FILE: ../../../third_party/skia/gm/tilemodes_scaled.cpp
 FILE: ../../../third_party/skia/gm/tinybitmap.cpp
-FILE: ../../../third_party/skia/gm/verttext.cpp
-FILE: ../../../third_party/skia/gm/verttext2.cpp
 FILE: ../../../third_party/skia/gm/xfermodes.cpp
 FILE: ../../../third_party/skia/include/core/SkData.h
 FILE: ../../../third_party/skia/include/core/SkImageEncoder.h