Roll src/third_party/SPIRV-Tools/src 1b3441036a8f..97f1d485b763 (1 commits)

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git/+log/1b3441036a8f..97f1d485b763

git log 1b3441036a8f..97f1d485b763 --date=short --first-parent --format='%ad %ae %s'
2020-01-28 stevenperron@google.com Dead branch elim fix (#3160)

Created with:
  gclient setdep -r src/third_party/SPIRV-Tools/src@97f1d485b763

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/spirv-tools-chromium-autoroll
Please CC radial-bots+chrome-roll@google.com,tobine@google.com,syoussefi@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_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-32;luci.chromium.try:win-angle-rel-64;luci.chromium.try:win-angle-deqp-rel-32;luci.chromium.try:win-angle-deqp-rel-64
Bug: None
Tbr: radial-bots+chrome-roll@google.com,tobine@google.com,syoussefi@google.com
Change-Id: I430340156d45a6469814d5f69707b7b95f4dc7bb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2025055Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Cr-Commit-Position: refs/heads/master@{#735973}

DEPS

@@ -292,7 +292,7 @@ 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': '1b3441036a8f178cb3b41c1aa222b652db522a88',
+  'spv_tools_revision': '97f1d485b76303ea7094fa164c0cc770b79f6f78',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.