Merge "ANativeWindow: Add NATIVE_WINDOW_BUFFER_AGE query"

     * The default data space for the buffers as set by the consumer.

     * The values are defined in graphics.h.

     */

    NATIVE_WINDOW_DEFAULT_DATASPACE = 12

    NATIVE_WINDOW_DEFAULT_DATASPACE = 12,

    /*

     * Returns the age of the contents of the most recently dequeued buffer as

     * the number of frames that have elapsed since it was last queued. For

     * example, if the window is double-buffered, the age of any given buffer in

     * steady state will be 2. If the dequeued buffer has never been queued, its

     * age will be 0.

     */

    NATIVE_WINDOW_BUFFER_AGE = 13,

};

/* Valid operations for the (*perform)() hook.