isNullEvent        68 Source/core/frame/DeviceSensorEventController.cpp         if (isNullEvent(event.get()))
isNullEvent        53 Source/core/frame/DeviceSensorEventController.h     virtual bool isNullEvent(Event*) = 0;
isNullEvent        62 Source/modules/device_orientation/DeviceMotionController.h     virtual bool isNullEvent(Event*) OVERRIDE;
isNullEvent        64 Source/modules/device_orientation/DeviceOrientationController.h     virtual bool isNullEvent(Event*) OVERRIDE;
isNullEvent        78 Source/modules/gamepad/NavigatorGamepad.h     virtual bool isNullEvent(Event*) OVERRIDE FINAL;