isNullEvent 90 Source/modules/device_orientation/DeviceMotionController.cpp bool DeviceMotionController::isNullEvent(Event* event) isNullEvent 97 Source/modules/device_orientation/DeviceOrientationController.cpp bool DeviceOrientationController::isNullEvent(Event* event) isNullEvent 207 Source/modules/gamepad/NavigatorGamepad.cpp bool NavigatorGamepad::isNullEvent(Event*)