Revert "Roll DevTools Frontend from 0b6df3ba1a45 to 8bf8ca6dc7f2 (6 revisions)"

This reverts commit d8496278.

Reason for revert: Breaks Linux Tests (dbg)(1) bots (2 runs) https://ci.chromium.org/p/chromium/builders/ci/Linux%20Tests%20%28dbg%29%281%29/90122

Failed tests are in http/tests/devtools

Original change's description:
> Roll DevTools Frontend from 0b6df3ba1a45 to 8bf8ca6dc7f2 (6 revisions)
> 
> https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/0b6df3ba1a45..8bf8ca6dc7f2
> 
> 2020-07-07 aerotwist@chromium.org Fix tsconfig generation paths
> 2020-07-07 tvanderlippe@chromium.org Migrate IdentityFormatter to TypeScript
> 2020-07-07 tvanderlippe@chromium.org Add OWNERS for test/conductor
> 2020-07-07 alexrudenko@chromium.org Fix stylelint-config-standard issues in sources/javaScriptBreakpointsSidebarPane.css
> 2020-07-07 tvanderlippe@chromium.org Extract copy to resources into separate template
> 2020-07-07 alexrudenko@chromium.org Fix snippet saving and search
> 
> 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:1066415,chromium:1083142,chromium:1098730
> Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
> Change-Id: I2ed9710ec2ea19cb56e4a5a03066a9764b5bcde8
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2284793
> 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@{#785749}

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

Change-Id: I6f47a424997d78770754159a4470762fc8513390
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:1011811, chromium:1066415, chromium:1083142, chromium:1098730
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2285311Reviewed-by: Darwin Huang <huangdarwin@chromium.org>
Commit-Queue: Darwin Huang <huangdarwin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#785928}

DEPS

@@ -265,7 +265,7 @@ 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': '8bf8ca6dc7f27d46230015bd789590defcb7346b',
+  'devtools_frontend_revision': '0b6df3ba1a4566c0655a2bc58808dded5008e87c',
   # 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.