This flag indicates that the event was modified or generated by an
accessibility service.
It allows apps to tell apart real hardware events, events that are
injected (device id == -1), and events coming from accessibility (has
flag is_accessibility_event).
Events that have gone into accessibility, and got reinjected without
being modified will not be distinguishable from real hardware events.
In the next release, we will make FLAG_IS_ACCESSIBILITY_EVENT public
api. Until then, applications will have to hard-code its value (0x800)
to use it. The value is the same for both KeyEvents and MotionEvents for
convenience.
Bug: 175069843
Bug: 152399927
Test: atest VerifiedMotionEventTest VerifiedKeyEventTest
Test: atest AccessibilityGestureDispatchTest
Test: atest inputflinger_tests libinput_tests GamepadWithAccessibilityTest
Change-Id: I38ac2ab8e19e32cad927742c623f14f43ea0c588
b42785efdf