Roll third_party/externals/swiftshader e9b6f28fdd71..b6fa949c4539 (2 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/e9b6f28fdd71..b6fa949c4539

git log e9b6f28fdd71..b6fa949c4539 --date=short --no-merges --format='%ad %ae %s'
2019-09-19 nicolascapens@google.com Merge changes I5e9afad9,Ibd0b2ee4
2019-09-19 amaiorano@google.com Fix ComputeProgramKey not strict weak ordering

Created with:
  gclient setdep -r third_party/externals/swiftshader@b6fa949c4539

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 brianosman@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.primary:Test-Debian9-Clang-GCE-GPU-SwiftShader-x86_64-Debug-All-SwiftShader
Bug: None
TBR=brianosman@google.com
Change-Id: I628f83d252d1e66403e375c47116719260838b33
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/243019
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