Roll src/third_party/SPIRV-Tools/src ac3d131054ac..31590104ec86 (3 commits)

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git/+log/ac3d131054ac..31590104ec86


git log ac3d131054ac..31590104ec86 --date=short --no-merges --format='%ad %ae %s'
2019-07-30 dneto@google.com Add pass to inject code for robust-buffer-access semantics (#2771)
2019-07-30 zoddicus@users.noreply.github.com Update OpMemoryBarriers rules for WebGPU (#2775)
2019-07-30 dneto@google.com Add opt test fixture method SinglePassRunAndFail (#2770)


Created with:
  gclient setdep -r src/third_party/SPIRV-Tools/src@31590104ec86

The AutoRoll server is located here: https://autoroll.skia.org/r/spirv-tools-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_angle_vk32_deqp_rel_ng;luci.chromium.try:android_angle_vk32_rel_ng;luci.chromium.try:android_angle_vk64_deqp_rel_ng;luci.chromium.try:android_angle_vk64_rel_ng;luci.chromium.try:linux_angle_deqp_rel_ng;luci.chromium.try:linux-angle-rel;luci.chromium.try:win-angle-rel;luci.chromium.try:win_angle_deqp_rel_ng

TBR=radial-bots+chrome-roll@google.com,geofflang@google.com

Bug: None
Change-Id: I127c2fc7469a886098fa2663811ebd9e2942e3b2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1728102Reviewed-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@{#682646}

DEPS

@@ -264,7 +264,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.
-  'spv_tools_revision': 'ac3d131054ac17d42e388d7e0e321c2c13bc2f13',
+  'spv_tools_revision': '31590104ec860ff364c0c768df7f55c7887aaa69',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.