Roll third_party/externals/swiftshader 07958d452f93..ebb0bec91552 (4 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/07958d452f93..ebb0bec91552

git log 07958d452f93..ebb0bec91552 --date=short --first-parent --format='%ad %ae %s'
2019-12-12 sergeyu@chromium.org Use allocateExecutable() in LLVMReactor
2019-12-12 sugoi@google.com Fix BCn related SwANGLE test failure
2019-12-12 capn@google.com Prevent clang-format from splitting shift operator
2019-12-12 sugoi@google.com Support for BC1, BC2, BC3, BC4 and BC5

Created with:
  gclient setdep -r third_party/externals/swiftshader@ebb0bec91552

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 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

Cq-Include-Trybots: skia/skia.primary:Test-Debian9-Clang-GCE-GPU-SwiftShader-x86_64-Debug-All-SwiftShader
Bug: None
Tbr: djsollen@google.com
Change-Id: Icd66a68ce1d6b9685d7d1bb01408f073f9b20e0b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/259918
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