Roll shaderc from b4a735cc1ada to 9a0423c5f727 (1 revision)

https://chromium.googlesource.com/external/github.com/google/shaderc/+log/b4a735cc1ada..9a0423c5f727

2020-06-01 rharrison@google.com Roll third_party/spirv-cross/ 61cddd630..d385bf096 (4 commits) (#1077)

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: Iec4a89dbf4c80e51cc29ea40f585fdf856cfe8d1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2225075Reviewed-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@{#773759}

DEPS

@@ -297,7 +297,7 @@ 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': 'b4a735cc1adadd57068c083989e5a345fab4a250',
+  'shaderc_revision': '9a0423c5f727e9d966486c3c1d2ca8eca6f6b19e',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.