Roll src/third_party/shaderc/src c4835b8523b1..488a0bd3c7d3 (1 commits)

https://chromium.googlesource.com/external/github.com/google/shaderc/+log/c4835b8523b1..488a0bd3c7d3

git log c4835b8523b1..488a0bd3c7d3 --date=short --no-merges --format='%ad %ae %s'
2019-10-21 rharrison@google.com Rolling 4 dependencies, small script fix and updating expectation files (#844)

Created with:
  gclient setdep -r src/third_party/shaderc/src@488a0bd3c7d3

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

TBR=radial-bots+chrome-roll@google.com

Bug: None
Change-Id: I29aa35538eb74b1bad865b5597a2c1cb37f634e8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1872919Reviewed-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@{#707977}

DEPS

@@ -302,7 +302,7 @@ 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': 'c4835b8523b129ed035a8c61e3e0e843600aa308',
+  'shaderc_revision': '488a0bd3c7d3e9ca1ae7f7cd7bb40017837f9f4a',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.