Roll src/third_party/swiftshader 6d3c7f5526ec..750660e15c3c (1 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/6d3c7f5526ec..750660e15c3c

git log 6d3c7f5526ec..750660e15c3c --date=short --first-parent --format='%ad %ae %s'
2019-12-19 bclayton@google.com Kokoro: Add style presubmit checks

Created with:
  gclient setdep -r src/third_party/swiftshader@750660e15c3c

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: I8a5df0f3e970b258e534ffcdf8ce26f1733a13bd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1976806Reviewed-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@{#726555}

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': '6d3c7f5526ec0c5cf1b8fb13e3bf9b587d33b002',
+  'swiftshader_revision': '750660e15c3cb18219bcc563c3e2454feb40b31e',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.