Consistent failure. See

https://ci.chromium.org/p/chrome/builders/luci.chrome.ci/Android%20Nexus6%20WebView%20Perf/3126
https://ci.chromium.org/p/chrome/builders/luci.chrome.ci/Android%20Nexus6%20WebView%20Perf/3125


Traceback (most recent call last):
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/story_runner.py", line 126, 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 75, in traced_function
    return func(*args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/page/shared_page_state.py", line 300, 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/system_health/system_health_story.py", line 123, in RunPageInteractions
    self._DidLoadDocument(action_runner)
  File "/b/swarming/w/ir/tools/perf/page_sets/system_health/browsing_stories.py", line 1031, in _DidLoadDocument
    'document.body != null && '
  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 261, in WaitForJavaScriptCondition
    return self._tab.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/browser/web_contents.py", line 245, 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 307, in WaitForJavaScriptCondition
    self.GetCurrentConsoleOutputBuffer())
  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 41, in Inner
    inspector_backend._ConvertExceptionFromInspectorWebsocket(e)
  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 38, in Inner
    return func(inspector_backend, *args, **kwargs)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py", line 196, in GetCurrentConsoleOutputBuffer
    return self._console.GetCurrentConsoleOutputBuffer(timeout)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_console.py", line 38, in GetCurrentConsoleOutputBuffer
    self._inspector_websocket.DispatchNotifications(timeout)
  File "/b/swarming/w/ir/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_websocket.py", line 156, in DispatchNotifications
    self._Receive(timeout)
  File "/b/swarming/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:document.body != null && document.body.scrollHeight > window.innerHeight && !document.body.addEventListener("touchstart", function() {})