After various experiments were enabled for the test domain being used by CFM automated tests, these tests started failing because of devtool crash which is a result of app re-launching in the middle of the test.


08/11 03:02:28.496 DEBUG|              test:0390| Test failed due to RPC error: cfm.wait_for_oobe_start_page
Traceback (most recent call last):
  File "./multimedia_xmlrpc_server.py", line 89, in _dispatch
    return func(*params)
  File "/usr/local/autotest/cros/multimedia/cfm_facade_native.py", line 150, in wait_for_oobe_start_page
    self.cfmApi.wait_for_oobe_start_page()
  File "/usr/local/autotest/cros/multimedia/cfm_facade_native.py", line 108, in cfmApi
    if self._webview_context.EvaluateJavaScript(
  File "/usr/local/autotest/cros/multimedia/cfm_facade_native.py", line 102, in _webview_context
    self._resource._browser, self._EXT_ID)
  File "/usr/local/autotest/common_lib/cros/kiosk_utils.py", line 27, in get_webview_context
    "document.querySelector('webview') ? 'WEBVIEW' : 'NOWEBVIEW'")
  File "/usr/local/telemetry/src/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 "/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/browser/web_contents.py", line 167, in EvaluateJavaScript
    return self._inspector_backend.EvaluateJavaScript(*args, **kwargs)
  File "/usr/local/telemetry/src/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 "/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py", line 237, in EvaluateJavaScript
    return self._EvaluateJavaScript(expression, context_id, timeout)
  File "/usr/local/telemetry/src/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 "/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py", line 39, in inner
    inspector_backend._ConvertExceptionFromInspectorWebsocket(e)
  File "/usr/local/telemetry/src/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 "/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py", line 36, in inner
    return func(inspector_backend, *args, **kwargs)
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py", line 501, in _EvaluateJavaScript
    return self._runtime.Evaluate(expression, context_id, timeout)
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_runtime.py", line 45, in Evaluate
    res = self._inspector_websocket.SyncRequest(request, timeout)
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_websocket.py", line 110, in SyncRequest
    res = self._Receive(timeout)
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_websocket.py", line 149, in _Receive
    data = self._socket.recv()
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py", line 293, in recv
    opcode, data = self.recv_data()
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py", line 310, in recv_data
    opcode, frame = self.recv_data_frame(control_frame)
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py", line 323, in recv_data_frame
    frame = self.recv_frame()
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py", line 357, in recv_frame
    return self.frame_buffer.recv_frame()
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_abnf.py", line 336, in recv_frame
    self.recv_header()
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_abnf.py", line 286, in recv_header
    header = self.recv_strict(2)
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_abnf.py", line 371, in recv_strict
    bytes_ = self.recv(min(16384, shortage))
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_core.py", line 427, in _recv
    return recv(self.sock, bufsize)
  File "/usr/local/telemetry/src/third_party/catapult/telemetry/third_party/websocket-client/websocket/_socket.py", line 93, in recv
    "Connection is already closed.")
DevtoolsTargetCrashException: Devtools target crashed
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(/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py:475 _ConvertExceptionFromInspectorWebsocket) Original exception:
Connection is already closed.
********************************************************************************
(/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py:496 _AddDebuggingInformation) Received a socket error in the browser connection and the tab no longer exists. The tab probably crashed.
********************************************************************************
(/usr/local/telemetry/src/third_party/catapult/telemetry/telemetry/internal/backends/chrome_inspector/inspector_backend.py:497 _AddDebuggingInformation) Debugger url: ws://127.0.0.1:60784/devtools/page/15117888-0e66-4b9d-bc8b-60a7d376a9a1
Found Minidump: False
Stack Trace:
********************************************************************************
	Cannot get stack trace on CrOS
********************************************************************************
Standard output:
********************************************************************************
	Cannot get standard output on CrOS
********************************************************************************
System log:
(Not implemented)
. Exception log follows the after_iteration_hooks.