Roll Skia from a8378cd12673 to eca2fed907ac (3 revisions) (#38423)

https://skia.googlesource.com/skia.git/+log/a8378cd12673..eca2fed907ac

2022-12-20 johnstiles@google.com Migrate slot-management code into a helper class.
2022-12-20 penghuang@chromium.org [graphite/dawn] support copy buffer and texture bytes per row alignment
2022-12-20 johnstiles@google.com Use const pointers for source data.

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 chinmaygarde@google.com,kjlubick@google.com 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': 'a8378cd126739b66216a6d2e3c07bee640a44ad6',
+  'skia_revision': 'eca2fed907ac79e2bb33528c7e3773369fc9774b',
 
   # 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: 32613ceb63662d723e59224e58ce7fb7
+Signature: 12cc5c5f5a3c1d55f747d0b16a21c8f5
 
 ====================================================================================================
 LIBRARY: etc1