Roll src/third_party/shaderc/src 486655782f8b..f175adffa9d2 (1 commits)

https://chromium.googlesource.com/external/github.com/google/shaderc/+log/486655782f8b..f175adffa9d2

git log 486655782f8b..f175adffa9d2 --date=short --first-parent --format='%ad %ae %s'
2020-04-02 rharrison@google.com Add flag to control if we build with -Werror (#1032)

Created with:
  gclient setdep -r src/third_party/shaderc/src@f175adffa9d2

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/shaderc-chromium-autoroll
Please CC radial-bots+chrome-roll@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

Bug: None
Tbr: radial-bots+chrome-roll@google.com
Change-Id: I99d2e11b152896bc312e181888848feca760a189
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2134954Reviewed-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@{#756049}

DEPS

@@ -298,7 +298,7 @@ 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': '486655782f8b8a4f04420d8452c2138da373956f',
+  'shaderc_revision': 'f175adffa9d2da6ae18a5f8d54e7b5f27df0f1c2',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.