Roll DevTools Frontend from a709974a868b to 540f809f11e2 (4 revisions)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/a709974a868b..540f809f11e2

2021-01-20 aerotwist@chromium.org [boot perf] Fix value sorting
2021-01-20 tvanderlippe@chromium.org Empty several modules keys in module.json files
2021-01-20 bmeurer@chromium.org [cleanup] Remove unnecessary Promise.resolve()s in DebuggerModel.js
2021-01-20 sadym@chromium.org Respect DeviceScaleFactor in fullscreen screenshots

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:1131500,chromium:1161501,chromium:1164757
Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
Change-Id: I08f677f466789a34cc4d0cf5062d30dbebf5f598
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2640274Reviewed-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@{#845147}

DEPS

@@ -278,7 +278,7 @@ 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': 'a709974a868b7b9e4f638c6a6ab5420404728acc',
+  'devtools_frontend_revision': '540f809f11e23844f44f8dc837e092e4256255ee',
   # 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.