Roll third_party/externals/swiftshader 068dd89cab31..45a4d0f36bd6 (5 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/068dd89cab31..45a4d0f36bd6

git log 068dd89cab31..45a4d0f36bd6 --date=short --first-parent --format='%ad %ae %s'
2020-01-08 capn@google.com Disable unused function warning
2020-01-07 bclayton@google.com Regres: Apply fix for invalid SPIR-V in 12 tests.
2020-01-07 capn@google.com Disable LLVM & Subzero stack traces and crash handling
2020-01-07 digit@google.com vulkan: use a marl::Event in the VkSemaphore implementation.
2020-01-07 digit@google.com [vulkan] Simplify vk::Semaphore implementation.

Created with:
  gclient setdep -r third_party/externals/swiftshader@45a4d0f36bd6

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 jvanverth@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: jvanverth@google.com
Change-Id: Ic41e2565cebaa92bb32e573ba193bd528fa71789
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/262984
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