Returns true (1) if the render process associated with this browser is
currently unresponsive as indicated by a lack of input event processing
for at least 15 seconds. To receive associated state change notifications
and optionally handle an unresponsive render process implement
Returns true (1) if the render process associated with this browser is currently unresponsive as indicated by a lack of input event processing for at least 15 seconds. To receive associated state change notifications and optionally handle an unresponsive render process implement