site_per_process_browser_tests failing on chromium.linux/Linux Tests

Builders failed on: 
- Linux Tests: 
  https://build.chromium.org/p/chromium.linux/builders/Linux%20Tests

WorkerDevToolsSanityTest.PauseInSharedWorkerInitialization (run #1):
[ RUN      ] WorkerDevToolsSanityTest.PauseInSharedWorkerInitialization
Xlib:  extension "RANDR" missing on display ":99".
Xlib:  extension "RANDR" missing on display ":99".
[1802:1802:0308/110828.016005:WARNING:audio_manager.cc(295)] Multiple instances of AudioManager detected
[1802:1802:0308/110828.016037:WARNING:audio_manager.cc(254)] Multiple instances of AudioManager detected
[1802:1802:0308/110828.044535:WARNING:password_store_factory.cc(247)] Using basic (unencrypted) store for password storage. See https://chromium.googlesource.com/chromium/src/+/master/docs/linux_password_storage.md for more information about password storage options.
HTTP server started on http://127.0.0.1:59903...
sending server_data: {"host": "127.0.0.1", "port": 59903} (36 bytes)
[1802:1802:0308/110828.954428:ERROR:CONSOLE(3158)] "Request ServiceWorker.enable failed. {"code":-32601,"message":"'ServiceWorker.enable' wasn't found"}", source: chrome-devtools://devtools/bundled/inspector.js (3158)
[1802:1802:0308/110828.961933:ERROR:CONSOLE(3158)] "Request Target.setDiscoverTargets failed. {"code":-32601,"message":"'Target.setDiscoverTargets' wasn't found"}", source: chrome-devtools://devtools/bundled/inspector.js (3158)
../../chrome/browser/devtools/devtools_sanity_browsertest.cc:143: Failure
Value of: result
  Actual: "[FAILED] Cannot find method to override: addTarget"
Expected: "[OK]"
[  FAILED  ] WorkerDevToolsSanityTest.PauseInSharedWorkerInitialization, where TypeParam =  and GetParam() =  (1422 ms)