Roll src/third_party/devtools-frontend/src 6b4f6d08b82f..449ac187cb55 (1 commits)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/6b4f6d08b82f..449ac187cb55

git log 6b4f6d08b82f..449ac187cb55 --date=short --first-parent --format='%ad %ae %s'
2019-12-03 aerotwist@chromium.org Adds manual boot perf script

Created with:
  gclient setdep -r src/third_party/devtools-frontend/src@449ac187cb55

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:1027519
Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
Change-Id: I1be4bea654ca97f4477a1f1234c58fdf88c91576
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1948613Reviewed-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@{#720916}

DEPS

@@ -243,7 +243,7 @@ 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': '6b4f6d08b82f20773e11028e9bdb4c8a41c8f911',
+  'devtools_frontend_revision': '449ac187cb55bf0ccbccdf2f2f0329aceb07e0bd',
   # 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.