Roll DevTools Frontend from 6bf67526ef67 to a7fb5599fb16 (1 revision)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/6bf67526ef67..a7fb5599fb16

2020-12-23 michael.liao@microsoft.com [Accessibility]: Adding grouping labels to sidebar tree in Applications view

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:1157691
Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
Change-Id: I06743d7c82358fd8317187fe68d41e5ce4eaea84
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2602499Reviewed-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@{#839185}

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': '6bf67526ef6779f7296b072b40196bef956d223b',
+  'devtools_frontend_revision': 'a7fb5599fb16549a2e2601310ce43f49a46ddffb',
   # 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.