Roll src/third_party/swiftshader a095711c5d77..8c13b2f02094 (2 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/a095711c5d77..8c13b2f02094

git log a095711c5d77..8c13b2f02094 --date=short --first-parent --format='%ad %ae %s'
2020-03-06 capn@google.com Explicitly compile with warnings-as-errors
2020-03-05 capn@google.com Support launching PowerVR samples from Visual Studio using SwiftShader

Created with:
  gclient setdep -r src/third_party/swiftshader@8c13b2f02094

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/swiftshader-chromium-autoroll
Please CC swiftshader-team+autoroll@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: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_chromium_msan_rel_ng;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Bug: chromium:1059196
Tbr: swiftshader-team+autoroll@google.com
Change-Id: Ica8b2d431aef339a35dc45dcf467dbffbb0dfa13
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2091422Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#747753}

DEPS

@@ -191,7 +191,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.
-  'swiftshader_revision': 'a095711c5d771437d7f9bfcbd78a82062e19c55e',
+  'swiftshader_revision': '8c13b2f02094bb3f6c223b8ec02c6f56bb0f748b',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.