Roll shaderc from 00e17f2cebef to 011139094ec7 (2 revisions)

https://chromium.googlesource.com/external/github.com/google/shaderc/+log/00e17f2cebef..011139094ec7

2020-09-03 rharrison@google.com Adding back non-spvc BUILD.gn that I accidentally nuked (#1136)
2020-09-03 rharrison@google.com Remove spvc (#1135)

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/+doc/master/autoroll/README.md

Tbr: radial-bots+chrome-roll@google.com
Change-Id: Iee77dff1220eb8b52792c577633190cc107640d3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2392669Reviewed-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@{#804275}

DEPS

@@ -314,7 +314,7 @@ 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': '00e17f2cebef5eb6c2b15d71efd656c3055b0399',
+  'shaderc_revision': '011139094ec790ff7f32ea2d80286255fc9ed18b',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.