Roll src/third_party/shaderc/src acf7d24d0187..3c76b8aa36fa (7 commits)

https://chromium.googlesource.com/external/github.com/google/shaderc/+log/acf7d24d0187..3c76b8aa36fa


git log acf7d24d0187..3c76b8aa36fa --date=short --no-merges --format='%ad %ae %s'
2019-06-07 zoddicus@users.noreply.github.com Re-introduce SetShaderModel for backwards compatibility (#675)
2019-06-07 zoddicus@users.noreply.github.com Refactor dup'd arg handling functions into a single location (#660)
2019-06-07 zoddicus@users.noreply.github.com Update Dockerfile to use Python 3 (#668)
2019-06-07 zoddicus@users.noreply.github.com  Add details of spvc to README.md (#661)
2019-06-07 zoddicus@users.noreply.github.com Change TODO(name) to TODO(bug issue#) for spvc files (#658)
2019-06-07 riko_ophorst@hotmail.com Fixing duplicate absolute install paths when using Visual Studio generators (#639)
2019-06-07 zoddicus@users.noreply.github.com Add in missing flags to pass more of the spirv-cross tests (#664)


Created with:
  gclient setdep -r src/third_party/shaderc/src@3c76b8aa36fa

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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
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TBR=radial-bots+chrome-roll@google.com

Change-Id: Idaf4a038c82ee89b347c322295aa1e51e61e4e69
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1650363Reviewed-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@{#667334}

DEPS

@@ -269,7 +269,7 @@ 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.
-  'shaderc_revision': 'acf7d24d01878bfdaf6e4e5df74722ec23b00954',
+  'shaderc_revision': '3c76b8aa36fad139c871859d75056b222d31489c',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.