Roll src/third_party/devtools-frontend/src aafa9b5c733c..bf9df5292254 (5 commits)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/aafa9b5c733c..bf9df5292254

git log aafa9b5c733c..bf9df5292254 --date=short --first-parent --format='%ad %ae %s'
2020-03-10 jacktfranklin@chromium.org Move utilities test to being built with Ninja
2020-03-10 jacktfranklin@chromium.org Move StringUtilities test into Ninja/TS land.
2020-03-10 szuend@chromium.org [utilities] Remove Array#remove 🎉
2020-03-10 szuend@chromium.org [cleanup] Use Map + Set instead of Object + Array in CSSModel
2020-03-10 szuend@chromium.org [utilities] Remove Map#remove

Created with:
  gclient setdep -r src/third_party/devtools-frontend/src@bf9df5292254

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/+/master/autoroll/README.md

Bug: chromium:1011811,chromium:1050549
Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
Change-Id: I22cf8ef2cd65c0059fe1a77eea8c97ee9f199e05
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2096088Reviewed-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@{#748695}

DEPS

@@ -246,7 +246,7 @@ 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': 'aafa9b5c733cc640f323da6c119d5f3b9e0d907f',
+  'devtools_frontend_revision': 'bf9df5292254561e91de4ddd78823643ebd41b65',
   # 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.