Snap for 6574919 from 46341afa to mainline-release

    long totalSizeInBytes;

    /**

     * Horizontal and vertical subsampling. Must be a positive power of 2.

     * Horizontal and vertical subsampling. Must be a positive power of 2. A value of 1

     * indicates no subsampling.

     *

     * These fields indicate the number of horizontally or vertically adjacent pixels that use

     * the same pixel data. A value of 1 indicates no subsampling.

     * the same pixel data.

     */

    long horizontalSubsampling;

    long verticalSubsampling;