Roll src/third_party/devtools-frontend/src e20606a24add..4ae5f4f5ce1e (3 commits)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/e20606a24add..4ae5f4f5ce1e

git log e20606a24add..4ae5f4f5ce1e --date=short --first-parent --format='%ad %ae %s'
2020-01-23 aerotwist@chromium.org [Global] Update refs to SDK.targetManager
2020-01-23 almuthanna@chromium.org Create Karma tests for CharacterIdMap and Settings
2020-01-23 aerotwist@chromium.org Fixes e2e hello world test

Created with:
  gclient setdep -r src/third_party/devtools-frontend/src@4ae5f4f5ce1e

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:1044632
Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
Change-Id: I21447508c90693209db93fa2f787832780de88d3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2015526Reviewed-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@{#734425}

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': 'e20606a24adde05d0de8beaa82fddaa8bc7ee785',
+  'devtools_frontend_revision': '4ae5f4f5ce1ebc9510cff198fd8e806b8063485a',
   # 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.