Roll shaderc from 5515d2a0c20c to 28652ef368ef (1 revision)

https://chromium.googlesource.com/external/github.com/google/shaderc/+log/5515d2a0c20c..28652ef368ef

2020-07-17 bclayton@google.com License checker (#1104)

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: I6c9b2cbd5715394bf1dd99bf80c12ca359eda379
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2304804Reviewed-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@{#789605}

DEPS

@@ -318,7 +318,7 @@ 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': '5515d2a0c20cb73e68190b9a39445d4bea4eeeab',
+  'shaderc_revision': '28652ef368ef2e85e28ddc41bf69cc79705d4865',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.