Roll src/third_party/SPIRV-Tools/src 3b5960174f6d..497958d899c3 (2 commits)

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git/+log/3b5960174f6d..497958d899c3


git log 3b5960174f6d..497958d899c3 --date=short --no-merges --format='%ad %ae %s'
2018-10-05 stevenperron@google.com  Removing HLSLCounterBuffer decorations when not needed. (#1954)
2018-10-04 jaebaek@google.com Validator: function scope variable at start of entry block #1923


Created with:
  gclient setdep -r src/third_party/SPIRV-Tools/src@497958d899c3

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.


TBR=dsinclair@chromium.org

Change-Id: I73ecd80882769b71034aa41b661c4ae8c9133325
Reviewed-on: https://chromium-review.googlesource.com/c/1264621Reviewed-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@{#597097}

DEPS

@@ -213,7 +213,7 @@ 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': '3b5960174f6d652feb4fb912b7fd84a23bbcde7d',
+  'spv_tools_revision': '497958d899c3f5fb4a4bda1a942c6fd7c0132ba6',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.