Roll Skia from db7a810dba5d to 645605735772 (1 revision) (#37796)

https://skia.googlesource.com/skia.git/+log/db7a810dba5d..645605735772

2022-11-20 [email protected] [pdf] Add stream compression level setting

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC [email protected],[email protected] on the revert to ensure that a human
is aware of the problem.

To file a bug in Skia: https://bugs.chromium.org/p/skia/issues/entry
To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Author: skia-flutter-autoroll

DEPS

@@ -18,7 +18,7 @@ vars = {
   'llvm_git': 'https://llvm.googlesource.com',
   # OCMock is for testing only so there is no google clone
   'ocmock_git': 'https://github.com/erikdoe/ocmock.git',
-  'skia_revision': 'db7a810dba5dc020f754da671203b6db757906be',
+  'skia_revision': '6456057357721bc60274979fdaf69b60b9d31478',
 
   # 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: a8eb77a660a561a4d73d1a51c9d00173
+Signature: 0aa26891cd5f229da9aaba2651cbe8e1
 
 UNUSED LICENSES: