Roll SwiftShader from d68844f4653b to 9b15236686b2 (3 revisions)

https://swiftshader.googlesource.com/SwiftShader.git/+log/d68844f4653b..9b15236686b2

2020-06-16 bclayton@google.com Update Marl to d29553a37
2020-06-16 bclayton@google.com Update Marl to 5c6c15322
2020-06-16 bclayton@google.com Merge changes I3e59c425,I46075a36,I73cd3e57,Ic09c196b

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/+doc/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: I3522f10f0f0140fb2180791f642fb5cb2beed07d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2248461Reviewed-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@{#778995}

DEPS

@@ -198,7 +198,7 @@ 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': 'd68844f4653b05ccecf7d2ed18a294d0dd983bb9',
+  'swiftshader_revision': '9b15236686b2ce5cfc7478c47547bc9d0bba3005',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.