Roll src/third_party/devtools-frontend/src 4af595189fe3..1c105ca31096 (4 commits)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/4af595189fe3..1c105ca31096

git log 4af595189fe3..1c105ca31096 --date=short --first-parent --format='%ad %ae %s'
2020-02-26 szuend@chromium.org Prepare TimelineUIUtils.js for asynchronous source mapping
2020-02-26 pfaffe@chromium.org Fix can-format-sourcecode test: await proper indicator
2020-02-26 aerotwist@chromium.org [e2e] Add user metrics tests
2020-02-26 aerotwist@chromium.org [screenshot] Updates server encoding

Created with:
  gclient setdep -r src/third_party/devtools-frontend/src@1c105ca31096

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:1032016,chromium:1044632
Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
Change-Id: I6f74cda8dddb227c3b1e6749a47545e75537f6e5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2073778Reviewed-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@{#744612}

DEPS

@@ -242,7 +242,7 @@ 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': '4af595189fe395ced300808982c6b320166bfe57',
+  'devtools_frontend_revision': '1c105ca310963ecd41f84f2f5da5759d43c8b8cc',
   # 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.