Roll Skia from c9d65f0b8ab6 to 2b868d6b9aa3 (5 revisions) (#28555)

diff --git a/DEPS b/DEPS
index 51b5092..510adaf 100644
--- a/DEPS
+++ b/DEPS
@@ -27,7 +27,7 @@
   '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': 'c9d65f0b8ab645b3ab9961a15f0704af22ac2f00',
+  'skia_revision': '2b868d6b9aa3107adbbf65fbe5f7dccd45925fe8',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.
diff --git a/ci/licenses_golden/licenses_skia b/ci/licenses_golden/licenses_skia
index c1c4639..704ad02 100644
--- a/ci/licenses_golden/licenses_skia
+++ b/ci/licenses_golden/licenses_skia
@@ -1,4 +1,4 @@
-Signature: 47133c0b7a24714015d6aa76467afedd
+Signature: 572dfc67bf32241e3f8a33a335f7679a
 
 UNUSED LICENSES:
 
@@ -2936,6 +2936,8 @@
 TYPE: LicenseType.bsd
 FILE: ../../../third_party/skia/bench/CanvasSaveRestoreBench.cpp
 FILE: ../../../third_party/skia/bench/TriangulatorBench.cpp
+FILE: ../../../third_party/skia/experimental/lowp-basic/QMath.h
+FILE: ../../../third_party/skia/experimental/lowp-basic/lerp-study.cpp
 FILE: ../../../third_party/skia/experimental/lowp-basic/lowp_experiments.cpp
 FILE: ../../../third_party/skia/experimental/tskit/bindings/bindings.h
 FILE: ../../../third_party/skia/experimental/tskit/bindings/core.cpp