Roll src/third_party/devtools-frontend/src e894e9c5869f..31b40ecf7208 (1 commits)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/e894e9c5869f..31b40ecf7208

git log e894e9c5869f..31b40ecf7208 --date=short --first-parent --format='%ad %ae %s'
2020-03-04 mathias@chromium.org Revert "Support emulating vision deficiencies"

Created with:
  gclient setdep -r src/third_party/devtools-frontend/src@31b40ecf7208

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/devtools-frontend-chromium
Please CC devtools-waterfall-sheriff-onduty@grotations.appspotmail.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: chromium:1003700
Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
Change-Id: I1038ebb64527f7efca10948bafc7d8cb7ed91e18
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2088267Reviewed-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@{#747004}

DEPS

@@ -246,7 +246,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling devtools-frontend
   # and whatever else without interference from each other.
-  'devtools_frontend_revision': 'e894e9c5869f4ce0c33377137fc5822f1e07d328',
+  'devtools_frontend_revision': '31b40ecf720801e9946050b55ff7b47742d0fddb',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libprotobuf-mutator
   # and whatever else without interference from each other.