Roll Skia from fb0fa24e31c8 to 37940afc0caf (5 revisions)

https://skia.googlesource.com/skia.git/+log/fb0fa24e31c8..37940afc0caf

2021-11-20 csmartdalton@google.com Remove remaining "Gr" references outside of #ifdefs from tessellators
2021-11-20 csmartdalton@google.com Move GrVertexColor to skgpu::VertexColor
2021-11-20 csmartdalton@google.com Move tessellation-specific functions out of GrPathUtils
2021-11-20 csmartdalton@google.com Move Ganesh-specific bits of StrokeTessellator into an #ifdef
2021-11-20 csmartdalton@google.com Convert StrokeTessellators to use PatchWriter

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 nifong@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: I46bcfb13726cee4c1d7f56d1dff4b55010d867d5