Roll DevTools Frontend from 8a5112747ff0 to 508bcddc99e4 (2 revisions)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/8a5112747ff0..508bcddc99e4

2020-12-16 yiorsi@gmail.com Fix: right-click in CSS var() cannot open the context menu
2020-12-16 andoli@chromium.org [module.json extensions] Migrate profiler views

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:1124707,chromium:1134103,chromium:1152391
Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
Change-Id: I42afedfb2df40d05c9320ed8deec16de0206b974
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2596003Reviewed-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@{#837875}

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': '8a5112747ff064cde054f592bc255cc4371a28b5',
+  'devtools_frontend_revision': '508bcddc99e4877109adf6c57fd7160824aa24a4',
   # 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.