Roll Skia from 068fc2cfc1cc to a4d684fc3ee9 (5 revisions)

https://skia.googlesource.com/skia.git/+log/068fc2cfc1cc..a4d684fc3ee9

2022-07-07 skia-autoroll@skia-public.iam.gserviceaccount.com Roll vulkan-deps from c119749eff1f to 12c42239e713 (6 revisions)
2022-07-07 armansito@google.com [sksl] Eliminate unreachable blocks inside switch cases
2022-07-07 herb@google.com Avoid divide-by-zero
2022-07-07 brianosman@google.com Fail paint conversion if a blender fails to produce an FP
2022-07-07 johnstiles@google.com Add SkSLTypeShared cpp file.

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 robertphillips@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://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

Test: Presubmit checks will test this change.
Exempt-From-Owner-Approval: The autoroll bot does not require owner approval.
Bug: b/186777432
Change-Id: I919ad5bca6e4094d5e129acfb3c705ae8ec236a7