Roll external/skia 3b2ff2deb8ab..2871ab0727bf (10 commits)

https://skia.googlesource.com/skia.git/+log/3b2ff2deb8ab..2871ab0727bf

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 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/+/master/autoroll/README.md

Test: Presubmit checks will test this change.
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Change-Id: I702de6752c7486c9247f97a6602b88516f0e7181