Roll DevTools Frontend from e22dad5763e9 to 31d659da1759 (7 revisions)

https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/e22dad5763e9..31d659da1759

2020-07-01 almuthanna@google.com Save console selector in a constant
2020-07-01 yangguo@chromium.org e2e test: set threshold for slow test to 1000ms
2020-07-01 devtools-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com Update DevTools DEPS.
2020-07-01 tvanderlippe@chromium.org Extract external module computation into rollup.config.js
2020-07-01 tvanderlippe@chromium.org Run terser minifier as part of rollup_entrypoint
2020-07-01 tvanderlippe@chromium.org Fix build configuration for acorn-numeric-separator
2020-07-01 tvanderlippe@chromium.org Fix rollup inputs for restat computation

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:1011811,chromium:1098730
Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
Change-Id: I7e9fa903b524e3d9ece84b7aab0085a25967a042
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2278007Reviewed-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@{#784475}

DEPS

@@ -259,7 +259,7 @@ 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': 'e22dad5763e9dcd18514c67f8c30499eafa18b19',
+  'devtools_frontend_revision': '31d659da17594136412dddf7d41de5078ef95a82',
   # 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.