Roll DevTools Frontend from d2f4b461e4a3 to a709974a868b (4 revisions)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/d2f4b461e4a3..a709974a868b

2021-01-20 sigurds@chromium.org Record schemes of developer resources via UMA
2021-01-20 janscheffler@chromium.org [JSDOC2TS]: Migrate media
2021-01-20 sigurds@chromium.org Update link for SAB usage
2021-01-20 kimanh@chromium.org [LMI] Rename 'Inspect memory' to 'Reveal in Memory Inspector panel'

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:1051466,chromium:1069378,chromium:1158760
Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
Change-Id: If4a102e437535dbe2c84b989e43ab06ca669a4d6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2639297Reviewed-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@{#845128}

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': 'd2f4b461e4a312ab377fcc07f21605b6f3586b95',
+  'devtools_frontend_revision': 'a709974a868b7b9e4f638c6a6ab5420404728acc',
   # 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.