Roll src/third_party/SPIRV-Tools/src 24328a055465..2af6ffae8264 (2 commits)

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git/+log/24328a055465..2af6ffae8264


git log 24328a055465..2af6ffae8264 --date=short --no-merges --format='%ad %ae %s'
2018-12-12 afdx@google.com Added test related to access chains, to be extended when issue 2183 is addressed. (#2192)
2018-12-12 afdx@google.com Validate during reduction (#2194)


Created with:
  gclient setdep -r src/third_party/SPIRV-Tools/src@2af6ffae8264

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: Ic5a8f944fbf3e834113cbcb3afdce06ea4d578bd
Reviewed-on: https://chromium-review.googlesource.com/c/1374033Reviewed-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@{#615903}

DEPS

@@ -223,7 +223,7 @@ 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': '24328a0554654d9e205b532288044d6d203c3f2c',
+  'spv_tools_revision': '2af6ffae826426cff344b69dce1779b10a1ebf63',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.