Roll third_party/externals/swiftshader b8d47928094f..b4a27407e2be (5 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/b8d47928094f..b4a27407e2be

git log b8d47928094f..b4a27407e2be --date=short --first-parent --format='%ad %ae %s'
2020-04-07 bclayton@google.com Coverage: Improve uncovered visualizations
2020-04-06 sugoi@google.com Don't blend integer formats
2020-04-06 amaiorano@google.com Clamp GLES sine/cosine to [-1,1]
2020-04-06 sugoi@google.com Delete Plane.cpp and Plane.hpp
2020-04-06 bclayton@google.com CMake / Kokoro: Build and run system-unittests.

Created with:
  gclient setdep -r third_party/externals/swiftshader@b4a27407e2be

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 csmartdalton@google.com,borenet@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-Debian10-Clang-GCE-GPU-SwiftShader-x86_64-Debug-All-SwiftShader
Bug: None
Tbr: csmartdalton@google.com,borenet@google.com
Change-Id: I28f29a386f59f4db32a3850445903391e56d4d56
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/282064
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