Roll SPIRV-Tools from 7a1af5878594 to fc0dc3a9c734 (5 revisions)

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git/+log/7a1af5878594..fc0dc3a9c734

2020-06-29 jaebaek@google.com Fix ADCE pass bug for mulitple entries (#3470)
2020-06-26 ehsannas@gmail.com Add gl_BaseInstance to the name mapper. (#3462)
2020-06-26 andreperezmaselco.developer@gmail.com Implement the OpMatrixTimesScalar linear algebra case (#3450)
2020-06-25 jaebaek@google.com Clear debug information for kill and replacement (#3459)
2020-06-25 alanbaker@google.com Validate location assignments (#3308)

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,ianelliott@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_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
Tbr: radial-bots+chrome-roll@google.com,ianelliott@google.com
Change-Id: I95d1d1626c22597d85b28344a0ecd17fd78c621c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2275638Reviewed-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@{#783897}

DEPS

@@ -295,7 +295,7 @@ 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': '7a1af5878594cec2992a1bb00565b4c712490239',
+  'spv_tools_revision': 'fc0dc3a9c734f798f85a8433cbd99306dbe82825',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.