Roll DevTools Frontend from f37a8715452c to 406249fca52c (4 revisions)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/f37a8715452c..406249fca52c

2020-12-14 tvanderlippe@chromium.org Split up ESLint rules configurations in sub-folders
2020-12-14 tvanderlippe@chromium.org Enforce specification of return type in function/method declarations
2020-12-14 tvanderlippe@chromium.org Add missing return types to function/method definitions
2020-12-14 patrick.brosset@microsoft.com [Flex] Adding gap support to the flex overlay

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/+doc/master/autoroll/README.md

Bug: chromium:1057042,chromium:1150832
Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
Change-Id: I633f813acbbf87784976d653cf8306f6ae5046b0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2588615Reviewed-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@{#836634}

DEPS

@@ -274,7 +274,7 @@ 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': 'f37a8715452ceec113be334ef781ff44210939ea',
+  'devtools_frontend_revision': '406249fca52ca5e1532a9ebe7e97961f7dda0627',
   # 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.