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

rendering.mobile/yahoo_answers_mobile_sync_scroll_2018, rendering.mobile/yahoo_answers_mobile_2018 and 2 other(s) in performance_test_suite failing on chromium.perf/android-nexus5x-perf

Builders failed on: 
- android-nexus5x-perf: 
  https://ci.chromium.org/buildbot/chromium.perf/android-nexus5x-perf

Screenshot shows a 404 error:
https://console.developers.google.com/m/cloudstorage/b/chrome-telemetry-output/o/0ea7146e-a13c-11e8-8a27-0242ac110007

Example log: https://console.developers.google.com/m/cloudstorage/b/chrome-telemetry-output/o/0dda0bfe-a13c-11e8-8a27-0242ac110007
(WARNING) 2018-08-16 09:55:33,016 action_runner.__exit__:831  Exception was raised in the with statement block, the end of interaction record is not marked.
(ERROR) 2018-08-16 09:55:33,016 story_runner.ProcessError:100  Handleable error
Traceback (most recent call last):
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/story_runner.py", line 125, in _RunStoryAndProcessErrorIfNeeded
    state.RunStory(results)
  File "/b/swarming/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 "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/page/shared_page_state.py", line 310, in RunStory
    self._current_page.Run(self)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/page/__init__.py", line 99, in Run
    self.RunPageInteractions(action_runner)
  File "/b/swarming/w/ir/tools/perf/page_sets/rendering/top_real_world_mobile.py", line 30, in RunPageInteractions
    action_runner.ScrollPage()
  File "/b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/actions/action_runner.py", line 411, in ScrollPage
    use_touch=use_touch, synthetic_gesture_source=synthetic_gesture_source))
  File "/b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/actions/action_runner.py", line 62, in _RunAction
    action.RunAction(self._tab)
  File "/b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/actions/scroll.py", line 116, in RunAction
    tab.WaitForJavaScriptCondition('window.__scrollActionDone', timeout=60)
  File "/b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/browser/web_contents.py", line 239, in WaitForJavaScriptCondition
    return self._inspector_backend.WaitForJavaScriptCondition(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/common/py_trace_event/py_trace_event/trace_event_impl/decorators.py", line 75, in traced_function
    return func(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py", line 302, in WaitForJavaScriptCondition
    e.message + '\n' + debug_message)
TimeoutException: Timed out while waiting 60s for IsJavaScriptExpressionTrue.

Disabling for now. These used to pass, kicking off a bisect:
https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=performance_test_suite&showAllRuns=true&builder=chromium.perf%3Aandroid-nexus5x-perf