Roll src/third_party/shaderc/src 72988e40a45e..ef2b7a6d5aed (2 commits)

https://chromium.googlesource.com/external/github.com/google/shaderc/+log/72988e40a45e..ef2b7a6d5aed


git log 72988e40a45e..ef2b7a6d5aed --date=short --no-merges --format='%ad %ae %s'
2019-07-16 dneto@google.com Avoid C-style cast for constants definitions (#760)
2019-07-16 jbolz@nvidia.com SetBeforeHlslLegalization to use more relaxed validation rules (#676)


Created with:
  gclient setdep -r src/third_party/shaderc/src@ef2b7a6d5aed

The AutoRoll server is located here: https://autoroll.skia.org/r/shaderc-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=radial-bots+chrome-roll@google.com

Change-Id: Iad53571ec368a5d8218bd42408d0fad4fa6d7fd9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1704751Reviewed-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@{#678018}

DEPS

@@ -275,7 +275,7 @@ 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': '72988e40a45ea46bfd615420b060c0b923a7a866',
+  'shaderc_revision': 'ef2b7a6d5aedd2dec30e77d8c97499ce5ab0564c',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.