Roll DevTools Frontend from cb29d3aed1ca to f55afd74b600 (2 revisions)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/cb29d3aed1ca..f55afd74b600

2020-05-28 almuthanna@google.com Convert Layout test for long trace trimming
2020-05-28 alexrudenko@chromium.org Rename inspector overlay build target

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:1078267
Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
Change-Id: I28c692c6656f9a5732735ab21471353c59b6de07
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2220166Reviewed-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@{#772708}

DEPS

@@ -249,7 +249,7 @@ 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': 'cb29d3aed1caee6cfec1dbd0c097cb38955a9e4c',
+  'devtools_frontend_revision': 'f55afd74b600374e0dc899cb7007bc5bac3de4f8',
   # 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.