1. Accessibility events for changes in the content of a given window, such as
click, focus, etc. are dispatched to clients only if they come from the
active window.
Events for changes in the state of a window, such as window got input focus
or a notification appeared, are always dispatched. The notification events
do not contain source, so a client cannot introspect the notification area
(unless the user explicitly touches it which generates hove events). The
events for a window getting input focus change the active window so they
have to be dispatched.
Events that are a result of the user touching the screen, such as hover
enter, first tocuh, etc. should always be dispatched.
bug:7282006
Change-Id: I96b79189f8571285175d9660a22394cc84f39559
58fd9f8d6a