Revert "Roll DevTools Frontend from 01f7fadf76bf to ecc4ecb65cd8 (1 revision)"

This reverts commit 8c45be6d.

Reason for revert: Either this or the previous devtools roll are suspected in closing tree crbug 1121242

Original change's description:
> Roll DevTools Frontend from 01f7fadf76bf to ecc4ecb65cd8 (1 revision)
> 
> https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/01f7fadf76bf..ecc4ecb65cd8
> 
> 2020-08-24 tvanderlippe@chromium.org Update Mocha and rollup-plugin-terser
> 
> 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: None
> Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
> Change-Id: Ieb099222e319b09a3c54525341520a9f8e1322d1
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2370523
> Reviewed-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@{#800979}

TBR=chromium-autoroll@skia-public.iam.gserviceaccount.com,devtools-waterfall-sheriff-onduty@grotations.appspotmail.com

Change-Id: I3930a85f217d2cb99fefae80b25754820310cdbf
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1121242
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2372891Reviewed-by: Matthew Wolenetz <wolenetz@chromium.org>
Commit-Queue: Matthew Wolenetz <wolenetz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#801032}

DEPS

@@ -266,7 +266,7 @@ 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': 'ecc4ecb65cd8285f5dc4eb6b02efb10787e440f2',
+  'devtools_frontend_revision': '01f7fadf76bf56f4e9a36003c17b01124bdbd2f5',
   # 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.