Roll src/third_party/swiftshader ad6d1b30e0f1..b8d47928094f (1 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/ad6d1b30e0f1..b8d47928094f

git log ad6d1b30e0f1..b8d47928094f --date=short --first-parent --format='%ad %ae %s'
2020-04-04 bclayton@google.com Vulkan: Destruct the list of vk::Query in QueryPool

Created with:
  gclient setdep -r src/third_party/swiftshader@b8d47928094f

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;luci.chromium.try:linux-swangle-try-x64;luci.chromium.try:win-swangle-try-x86
Bug: None
Tbr: swiftshader-team+autoroll@google.com
Change-Id: I36b7b07fb8d89b60bf377619fb0c3ba7319f3a9a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2136457Reviewed-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@{#756532}

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': 'ad6d1b30e0f1b5d28e91da61dadfa31d94ddffe6',
+  'swiftshader_revision': 'b8d47928094f55a5166ac18c4451d59e4b48b907',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.