Roll SPIRV-Tools from 13a65b1aee42 to df859f77dab3 (7 revisions)

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git/+log/13a65b1aee42..df859f77dab3

2020-08-12 andreperezmaselco.developer@gmail.com spirv-fuzz: Check integer and float width capabilities (#3670)
2020-08-12 andreperezmaselco.developer@gmail.com spirv-fuzz: consider additional access chain instructions (#3672)
2020-08-12 andreperezmaselco.developer@gmail.com spirv-fuzz: Ignore specialization constants (#3664)
2020-08-12 vasniktel@gmail.com Fix the bug (#3683)
2020-08-12 vasniktel@gmail.com spirv-fuzz: Fix width in FuzzerPassAddEquationInstructions (#3685)
2020-08-12 jaebaek@google.com Preserve debug info in dead-insert-elim pass (#3652)
2020-08-12 jaebaek@google.com Validate more OpenCL.DebugInfo.100 instructions (#3684)

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,ynovikov@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,ynovikov@google.com
Change-Id: Id932045ee512891cd5a5e39ce7810c70bc9e7ce3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2353477Reviewed-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@{#797626}

DEPS

@@ -302,7 +302,7 @@ 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': '13a65b1aee425a97b9ca73d81212d99fd2bf9227',
+  'spv_tools_revision': 'df859f77dab392dbc78c213d36ba19216b3d068e',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.