Roll Skia from c5d3326d767d to b6dfd97c5290 (10 revisions) (flutter#31377)

Author: skia-flutter-autoroll

DEPS

@@ -27,7 +27,7 @@ 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': 'c5d3326d767d262e9f92f308ea6811ddf03ed834',
+  'skia_revision': 'b6dfd97c52906c1748b9c2a2406eea44a8daf96c',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.

ci/licenses_golden/licenses_skia

@@ -1,4 +1,4 @@
-Signature: 034a18b08e17e7f9233edb75a9a8dd48
+Signature: 73ec28a544af6c4f53d57c7ff43fa7f0
 
 UNUSED LICENSES:
 
@@ -5640,6 +5640,7 @@ FILE: ../../../third_party/skia/src/sksl/SkSLGLSL.h
 FILE: ../../../third_party/skia/src/sksl/ir/SkSLExpression.cpp
 FILE: ../../../third_party/skia/src/sksl/lex/TransitionTable.cpp
 FILE: ../../../third_party/skia/src/sksl/lex/TransitionTable.h
+FILE: ../../../third_party/skia/src/utils/SkCycles.h
 FILE: ../../../third_party/skia/src/utils/SkOrderedFontMgr.cpp
 ----------------------------------------------------------------------------------------------------
 Copyright 2021 Google Inc.
@@ -6526,6 +6527,7 @@ LIBRARY: skia
 ORIGIN: ../../../third_party/skia/gm/drawlines_with_local_matrix.cpp + ../../../third_party/skia/LICENSE
 TYPE: LicenseType.bsd
 FILE: ../../../third_party/skia/gm/drawlines_with_local_matrix.cpp
+FILE: ../../../third_party/skia/src/utils/SkBlitterTrace.h
 ----------------------------------------------------------------------------------------------------
 Copyright 2022 Google Inc.