Roll SPIRV-Tools from 680c77fa6c81 to 717e7877cac1 (6 revisions)

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git/+log/680c77fa6c81..717e7877cac1

2020-07-17 alanbaker@google.com Store location values sparsely (#3488)
2020-07-17 dneto@google.com Permit Simple and GLSL450 memory model in WEBGPU_0 (#3463)
2020-07-17 antonikarp@google.com spirv-fuzz: support floating-point in TransformationInvertComparisonOperator (#3551)
2020-07-17 stefanomil@google.com Change MaybeApplyTransformation to return a boolean (#3555)
2020-07-17 stefanomil@google.com spirv-fuzz: Implement MaybeApplyTransformation helper function (#3540)
2020-07-17 stefanomil@google.com spirv-fuzz: Assert false in IsApplicable method of TransformationAccessChain (#3528)

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,timvp@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,timvp@google.com
Change-Id: Ibe52f2f1d4c911df089c58c4ebdc59721a412b1d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2307130Reviewed-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@{#789874}

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': '680c77fa6c81ba03d19b3315d1cad116fc4e6da2',
+  'spv_tools_revision': '717e7877cac15d393fd3bb1bd872679de8b59add',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.