Revert "Roll DevTools Frontend from 8bf8ca6dc7f2 to 8c03d5d9bcc5 (14 revisions)"

This reverts commit 751e24d3.

Reason for revert: 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

Original change's description:
> Roll DevTools Frontend from 8bf8ca6dc7f2 to 8c03d5d9bcc5 (14 revisions)
> 
> https://chromium.googlesource.com/devtools/devtools-frontend.git/+log/8bf8ca6dc7f2..8c03d5d9bcc5
> 
> 2020-07-07 sigurds@chromium.org Update heavy ads issue strings
> 2020-07-07 tvanderlippe@chromium.org Fix stylelint errors in networkPanel.css
> 2020-07-07 tvanderlippe@chromium.org Fix stylelint errors in media/playerPropertiesView.css
> 2020-07-07 aerotwist@chromium.org [CSS Overview] Adds checks for null / undefined
> 2020-07-07 tvanderlippe@chromium.org Fix stylelint errors in network/networkLogView.css
> 2020-07-07 jacktfranklin@chromium.org Fix component _bridges generation for TypeScript 4
> 2020-07-07 petermarshall@chromium.org Revert "Add E2E tests for Breakpoint test cases"
> 2020-07-07 leese@chromium.org Add helpers for debugging and snippet tests
> 2020-07-07 jacktfranklin@chromium.org Fix test_helpers on Python 3
> 2020-07-07 pfaffe@chromium.org [wasm debugging] Add a js_type to evaluator results
> 2020-07-07 tvanderlippe@chromium.org Remove e2e-test build files from .gitignore
> 2020-07-07 devtools-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com Update DevTools DEPS.
> 2020-07-07 tvanderlippe@chromium.org Fix stylelint reports in inline_editor/cssShadowEditor.css
> 2020-07-07 johanbay@gmail.com Fix stylelint-config-standard issues in color_picker/spectrum.css
> 
> 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:1083142,chromium:1083146,chromium:1088463,chromium:1094436,chromium:1095617,chromium:1102704
> Tbr: devtools-waterfall-sheriff-onduty@grotations.appspotmail.com
> Change-Id: Id88b50084ed4c7ee17b34047eeb2fcc769afa10c
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2284949
> 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@{#785858}

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

Change-Id: I61a751350b187f86f2cd7093f1fb1976f6cc0258
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:1083142, chromium:1083146, chromium:1088463, chromium:1094436, chromium:1095617, chromium:1102704
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2285173Reviewed-by: Darwin Huang <huangdarwin@chromium.org>
Commit-Queue: Darwin Huang <huangdarwin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#785927}

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': '8c03d5d9bcc512e89cd08c429af64a59e0c3e636',
+  'devtools_frontend_revision': '8bf8ca6dc7f27d46230015bd789590defcb7346b',
   # 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.