Roll src/third_party/skia d860a78fd60c..581108137b46 (13 commits)

[skia-flutter-autoroll]

https://skia.googlesource.com/skia.git/+log/d860a78fd60c..581108137b46

git log d860a78..5811081 --date=short --no-merges --format='%ad %ae %s'
2019-11-12 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-11-12 csmartdalton@google.com Add 'numRasterSamples' and 'isMixedSampled' to GrProgramInfo
2019-11-12 ccross@android.com [SkQP/Android] Replace -Weverything with -Wextra
2019-11-12 robertphillips@google.com Use a priori knowledge about the number of stencil bits in Dawn, Metal and Vulkan backends
2019-11-12 senorblanco@chromium.org Dawn: implement dynamic primitive processor texture handling.
2019-11-12 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-11-12 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 31edef7..9da287f (6 commits)
2019-11-12 jvanverth@google.com Detect whether trying to blit a Metal swapchain texture, and fail if so.
2019-11-12 senorblanco@chromium.org Dawn: fix bug in stencil handling.
2019-11-12 nigeltao@google.com Free SkWuffsCodec frame-count decoder earlier
2019-11-12 bungeman@google.com Track and force opsz axis on Mac.
2019-11-12 herb@google.com Make metrics const on SkStrike
2019-11-12 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).

Created with:
gclient setdep -r src/third_party/skia@581108137b46

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 halcanary@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

Bug: None
TBR=halcanary@google.com

[skia-flutter-autoroll]

Auto-roller completed checks. About to merge.