Roll src/third_party/SPIRV-Tools/src e8c2d95ed45f..7ce37d66a86d (4 commits)

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git/+log/e8c2d95ed45f..7ce37d66a86d


git log e8c2d95ed45f..7ce37d66a86d --date=short --no-merges --format='%ad %ae %s'
2019-04-08 stevenperron@google.com Fix use of Logf to avoid format security warning (#2498)
2019-04-05 zoddicus@users.noreply.github.com Add WebGPU->Vulkan and Vulkan->WebGPU flags in spirv-opt (#2496)
2019-04-05 46733637+JasperNV@users.noreply.github.com spirv-opt: Behave a bit better in the face of unknown instructions (#2487)
2019-04-05 stevenperron@google.com Add fix storage class code. (#2434)


Created with:
  gclient setdep -r src/third_party/SPIRV-Tools/src@7ce37d66a86d

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: I070f936d09937f039988ed1e42219f1e41284c06
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1557888Reviewed-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@{#648699}

DEPS

@@ -252,7 +252,7 @@ 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': 'e8c2d95ed45f0b839e7f04c05675921a5f624eff',
+  'spv_tools_revision': '7ce37d66a86d5869ed64e996c9ae694cd47796b8',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.