Roll third_party/externals/swiftshader a68a80a4dbf9..26c6c4a5eb83 (1 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/a68a80a4dbf9..26c6c4a5eb83

git log a68a80a4dbf9..26c6c4a5eb83 --date=short --no-merges --format='%ad %ae %s'
2019-10-18 amaiorano@google.com Fix Win32SurfaceKHR resize issues

Created with:
  gclient setdep -r third_party/externals/swiftshader@26c6c4a5eb83

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 michaelludwig@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=michaelludwig@google.com
Change-Id: I85642e9e0eb7b68c61bdb74a9196cd4dba0bedff
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/249696
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