Roll src/third_party/SPIRV-Tools/src e1a76269b649..1f60f9896468 (2 commits)

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git/+log/e1a76269b649..1f60f9896468


git log e1a76269b649..1f60f9896468 --date=short --no-merges --format='%ad %ae %s'
2019-03-21 paulthomson@users.noreply.github.com reduce: remove unreferenced blocks pass (#2398)
2019-03-19 zoddicus@users.noreply.github.com Convert sampled consumers to being Instructions instead of IDs (#2464)


Created with:
  gclient setdep -r src/third_party/SPIRV-Tools/src@1f60f9896468

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: I144ade76d6330bdbf6d292c0bdb25dd63eb4a970
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1533441
Reviewed-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@{#642948}
diff --git a/DEPS b/DEPS
index 4eb0ce1..e45f1d1 100644
--- a/DEPS
+++ b/DEPS
@@ -248,7 +248,7 @@
   # 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': 'e1a76269b649b7263266c1197622468dae9950b3',
+  'spv_tools_revision': '1f60f98964687ffe8656ac35dce035e79d78ebf0',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.