Filed by sheriff-o-matic@appspot.gserviceaccount.com on behalf of sullivan@google.com

blink_perf.dom/custom-element-default-style.html in performance_test_suite failing on chromium.perf/Win 7 Nvidia GPU Perf

Builders failed on: 
- Win 7 Nvidia GPU Perf: 
  https://ci.chromium.org/p/chrome/builders/luci.chrome.ci/Win%207%20Nvidia%20GPU%20Perf

Disabling and running a bisect now.

Screenshot is blank.
Log snippet:
(WARNING) 2018-12-11 21:32:05,503 inspector_log._OnMessage:26  DevTools console [network]: Failed to load resource: the server responded with a status of 404 (File not found) http://127.0.0.1:63512/favicon.ico
(INFO) 2018-12-11 21:32:05,607 action_runner._RunAction:64  DONE Page Action: NavigateAction
(INFO) 2018-12-11 21:33:21,223 desktop_browser_backend._GetAllCrashpadMinidumps:325  Found crashpad_database_util
(INFO) 2018-12-11 21:33:21,259 desktop_browser_backend._GetMostRecentMinidump:396  No minidump found via crashpad_database_util
(INFO) 2018-12-11 21:33:21,259 desktop_browser_backend._GetAllCrashpadMinidumps:325  Found crashpad_database_util
(INFO) 2018-12-11 21:33:21,263 desktop_browser_backend._GetMostRecentMinidump:396  No minidump found via crashpad_database_util
(ERROR) 2018-12-11 21:33:21,265 story_runner.ProcessError:119  Handleable error
Traceback (most recent call last):
  File "c:\b\s\w\ir\third_party\catapult\telemetry\telemetry\internal\story_runner.py", line 145, in _RunStoryAndProcessErrorIfNeeded
    state.RunStory(results)
  File "c:\b\s\w\ir\third_party\catapult\common\py_trace_event\py_trace_event\trace_event_impl\decorators.py", line 52, in traced_function
    return func(*args, **kwargs)
  File "c:\b\s\w\ir\third_party\catapult\telemetry\telemetry\page\shared_page_state.py", line 304, in RunStory
    self._current_page.Run(self)
  File "c:\b\s\w\ir\third_party\catapult\telemetry\telemetry\page\__init__.py", line 96, in Run
    shared_state.page_test.DidNavigateToPage(self, current_tab)
  File "c:\b\s\w\ir\third_party\catapult\common\py_trace_event\py_trace_event\trace_event_impl\decorators.py", line 52, in traced_function
    return func(*args, **kwargs)
  File "c:\b\s\w\ir\tools\perf\benchmarks\blink_perf.py", line 259, in DidNavigateToPage
    tab.WaitForJavaScriptCondition('testRunner.isWaitingForTelemetry')
  File "c:\b\s\w\ir\third_party\catapult\common\py_trace_event\py_trace_event\trace_event_impl\decorators.py", line 52, in traced_function
    return func(*args, **kwargs)
  File "c:\b\s\w\ir\third_party\catapult\telemetry\telemetry\internal\browser\web_contents.py", line 245, in WaitForJavaScriptCondition
    return self._inspector_backend.WaitForJavaScriptCondition(*args, **kwargs)
  File "c:\b\s\w\ir\third_party\catapult\common\py_trace_event\py_trace_event\trace_event_impl\decorators.py", line 52, in traced_function
    return func(*args, **kwargs)
  File "c:\b\s\w\ir\third_party\catapult\telemetry\telemetry\internal\backends\chrome_inspector\inspector_backend.py", line 307, in WaitForJavaScriptCondition
    self.GetCurrentConsoleOutputBuffer())
  File "c:\b\s\w\ir\third_party\catapult\common\py_trace_event\py_trace_event\trace_event_impl\decorators.py", line 52, in traced_function
    return func(*args, **kwargs)
  File "c:\b\s\w\ir\third_party\catapult\telemetry\telemetry\internal\backends\chrome_inspector\inspector_backend.py", line 41, in Inner
    inspector_backend._ConvertExceptionFromInspectorWebsocket(e)
  File "c:\b\s\w\ir\third_party\catapult\common\py_trace_event\py_trace_event\trace_event_impl\decorators.py", line 52, in traced_function
    return func(*args, **kwargs)
  File "c:\b\s\w\ir\third_party\catapult\telemetry\telemetry\internal\backends\chrome_inspector\inspector_backend.py", line 38, in Inner
    return func(inspector_backend, *args, **kwargs)
  File "c:\b\s\w\ir\third_party\catapult\telemetry\telemetry\internal\backends\chrome_inspector\inspector_backend.py", line 196, in GetCurrentConsoleOutputBuffer
    return self._console.GetCurrentConsoleOutputBuffer(timeout)
  File "c:\b\s\w\ir\third_party\catapult\telemetry\telemetry\internal\backends\chrome_inspector\inspector_console.py", line 38, in GetCurrentConsoleOutputBuffer
    self._inspector_websocket.DispatchNotifications(timeout)
  File "c:\b\s\w\ir\third_party\catapult\telemetry\telemetry\internal\backends\chrome_inspector\inspector_websocket.py", line 156, in DispatchNotifications
    self._Receive(timeout)
  File "c:\b\s\w\ir\third_party\catapult\telemetry\telemetry\internal\backends\chrome_inspector\inspector_websocket.py", line 181, in _Receive
    raise WebSocketException(err)
TimeoutException: Timeout after 60s while waiting for JavaScript:testRunner.isWaitingForTelemetry

Exception thrown when trying to capture console output: TimeoutException('',)