Roll src/third_party/devtools-frontend/src c11ee67062ce..951d1b78a6e5 (2 commits)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/c11ee67062ce..951d1b78a6e5

git log c11ee67062ce..951d1b78a6e5 --date=short --first-parent --format='%ad %ae %s'
2020-02-27 sigurds@chromium.org [e2etest] Port layout test to e2e test
2020-02-27 szuend@chromium.org Prepare DebuggerPlugin.js for asynchronous source mapping

Created with:
  gclient setdep -r src/third_party/devtools-frontend/src@951d1b78a6e5

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: I59682e71c8c7e039d9544a0fa1db5ed5ae19fd40
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2077822Reviewed-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@{#745006}

DEPS

@@ -246,7 +246,7 @@ 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': 'c11ee67062cebee56a84b715f4c364cc459d78d3',
+  'devtools_frontend_revision': '951d1b78a6e5b02f44aa0ef15a6b407e14597b4c',
   # 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.