Roll DevTools Frontend from 6380ab5a1d67 to 88bc40da7991 (1 revision)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/6380ab5a1d67..88bc40da7991

2020-06-02 anubmat@microsoft.com Add Serviceworker respondWith Timeline to network panel

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:1066579
Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
Change-Id: I6a7aba9f0ad97b130dad465cff51bbc906943ba7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2227271Reviewed-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@{#774385}

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': '6380ab5a1d67d6aff8721e9c82fe5c01a906e3c4',
+  'devtools_frontend_revision': '88bc40da7991671a52a76c91ac9a67e91839e21c',
   # 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.