Roll src/third_party/swiftshader 115cfe7a1b32..d6dc4b7e4533 (1 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/115cfe7a1b32..d6dc4b7e4533

git log 115cfe7a1b32..d6dc4b7e4533 --date=short --no-merges --format='%ad %ae %s'
2019-08-23 chrisforbes@google.com Store subpass index in ExecutionState, not in RenderPass

Created with:
  gclient setdep -r src/third_party/swiftshader@d6dc4b7e4533

The AutoRoll server is located here: https://autoroll.skia.org/r/swiftshader-chromium-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


CQ_INCLUDE_TRYBOTS=luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
TBR=swiftshader-team+autoroll@google.com

Bug: chromium:b/139824232
Change-Id: Id8bdaab75c9ff8d6c2f8269fc24527484302f2a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1769156Reviewed-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@{#689990}

DEPS

@@ -161,7 +161,7 @@ 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': '115cfe7a1b321abd9ab41d2b7754ec26f45b7931',
+  'swiftshader_revision': 'd6dc4b7e45334f493f49cf70114e939f7fc25fde',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.