Roll src/third_party/swiftshader f6a6a4162f28..a7e42ba7f855 (1 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/f6a6a4162f28..a7e42ba7f855

git log f6a6a4162f28..a7e42ba7f855 --date=short --first-parent --format='%ad %ae %s'
2020-01-09 bclayton@google.com Kokoro: Disable ASAN for debug mac builds

Created with:
  gclient setdep -r src/third_party/swiftshader@a7e42ba7f855

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: None
Tbr: swiftshader-team+autoroll@google.com
Change-Id: If67a94492a914b1ed5f8493bc8d753399849130b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1993884Reviewed-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@{#729954}

DEPS

@@ -197,7 +197,7 @@ 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': 'f6a6a4162f28820a196fbacb82e3a7f9d522cec1',
+  'swiftshader_revision': 'a7e42ba7f855d8adcbca8482a803dc2b0f06fc6f',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.