Roll Skia from 49e32eb178a7 to 3a3475d12f22 (2 revisions)

https://skia.googlesource.com/skia.git/+log/49e32eb178a7..3a3475d12f22

2023-12-12 kjlubick@google.com Fix defines for G3 android build
2023-12-12 michaelludwig@google.com [skif] Add non-strict asShader() to SkSpecialImage

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://skia-autoroll.corp.goog/r/android-master-autoroll
Please CC djsollen@google.com,rmistry@google.com,scroggo@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

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

Test: Presubmit checks will test this change.
Exempt-From-Owner-Approval: The autoroll bot does not require owner approval.
Bug: b/305780908
Bug: b/315351386
Bug: b/186777432
Change-Id: Ifadf20f591483d5b6314a2124e8ef9b039b2ce2e