Roll src/third_party/devtools-frontend/src eaacb72383ba..2ef3661d276c (4 commits)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/eaacb72383ba..2ef3661d276c

git log eaacb72383ba..2ef3661d276c --date=short --first-parent --format='%ad %ae %s'
2020-01-10 tvanderlippe@chromium.org Migrate mobile_throttling/ to ESM internally
2020-01-10 tvanderlippe@chromium.org Migrate heap_snapshot_model/ to ESM internally
2020-01-10 tvanderlippe@chromium.org Migrate console_counters/ to ESM internally
2020-01-10 sigurds@chromium.org [coverage] Refactor backlogging in the CoverageModel

Created with:
  gclient setdep -r src/third_party/devtools-frontend/src@2ef3661d276c

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:1006759,chromium:1022031
Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
Change-Id: I0aaefb5dff89b86e171195ce1c46921e1e219192
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1995426Reviewed-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@{#730225}

DEPS

@@ -252,7 +252,7 @@ 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': 'eaacb72383ba495771a787282a1704bba13b8050',
+  'devtools_frontend_revision': '2ef3661d276c4d31381479c25e0f2cd4153fe6eb',
   # 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.