Roll src/third_party/devtools-frontend/src a80b423b2136..c591f1048c69 (2 commits)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/a80b423b2136..c591f1048c69

git log a80b423b2136..c591f1048c69 --date=short --first-parent --format='%ad %ae %s'
2020-03-23 sigurds@chromium.org [issues] Don't clear issues that logically belong to current navigation
2020-03-23 bmeurer@chromium.org Fix DESIGN_GUIDELINES.md link in README.md.

Created with:
  gclient setdep -r src/third_party/devtools-frontend/src@c591f1048c69

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:1060628
Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
Change-Id: Ifce41974f345172ad5fc194c3e3f8ef9a6d38cc6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2114846Reviewed-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@{#752404}

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': 'a80b423b2136153f0ae5da32eb2bf4cf59798669',
+  'devtools_frontend_revision': 'c591f1048c69b224e13429dc0ad394fed5ab9d7b',
   # 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.