Roll third_party/externals/swiftshader 41a7302e9c62..8e8e1d0dd729 (4 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/41a7302e9c62..8e8e1d0dd729

git log 41a7302e9c62..8e8e1d0dd729 --date=short --first-parent --format='%ad %ae %s'
2020-02-04 bclayton@google.com Shader: Add missing switch cases to operationString
2020-02-04 bclayton@google.com OpenGL: Fix switch with only a default case.
2020-02-04 amaiorano@google.com Regres: fix no env-vars for deqp on Windows
2020-02-04 lfy@google.com android: avoid exporting normal Vulkan APIs

Created with:
  gclient setdep -r third_party/externals/swiftshader@8e8e1d0dd729

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/swiftshader-skia-autoroll
Please CC 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://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

Cq-Include-Trybots: skia/skia.primary:Test-Debian9-Clang-GCE-GPU-SwiftShader-x86_64-Debug-All-SwiftShader
Bug: None
Tbr: scroggo@google.com
Change-Id: I94d1de64d5f3d36d8a6846706c4f114789da39d5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/268715
Reviewed-by: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
1 file changed