Roll DevTools Frontend from c4294f0266f1 to a73ba689e695 (6 revisions)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/c4294f0266f1..a73ba689e695

2020-11-16 futhark@google.com Change ::selection backgrounds according to Blink fix
2020-11-16 aerotwist@chromium.org TypeScriptify ObjectPropertiesSection.js
2020-11-16 aerotwist@chromium.org TypeScriptify TimelineGrid.js
2020-11-16 tvanderlippe@chromium.org Use TypeScript-authored files in sources/
2020-11-16 tvanderlippe@chromium.org Update `@typescript-eslint` packages
2020-11-16 tvanderlippe@chromium.org Typecheck object_ui/RemoteObjectPreviewFormatter.js with TypeScript

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:1011811,chromium:1018450,chromium:1149259
Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
Change-Id: I322ad5822614ad186f650359575573116214d810
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2541444Reviewed-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@{#827885}

DEPS

@@ -272,7 +272,7 @@ 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': 'c4294f0266f1c8f42931c507c811bf59c24be25a',
+  'devtools_frontend_revision': 'a73ba689e695ca36c6b056401bdef9852c172d1d',
   # 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.