Merge "Update call log provider docs to clarify how to use LIMIT." am:...

    /**

     * Contains the recent calls.

     * <p>

     * Note: If you want to query the call log and limit the results to a single value, you should

     * append the {@link #LIMIT_PARAM_KEY} parameter to the content URI.  For example:

     * <pre>

     * {@code

     * getContentResolver().query(

     *                 Calls.CONTENT_URI.buildUpon().appendQueryParameter(LIMIT_PARAM_KEY, "1")

     *                 .build(),

     *                 null, null, null, null);

     * }

     * </pre>

     * <p>

     * The call log provider enforces strict SQL grammar, so you CANNOT append "LIMIT" to the SQL

     * query as below:

     * <pre>

     * {@code

     * getContentResolver().query(Calls.CONTENT_URI, null, "LIMIT 1", null, null);

     * }

     * </pre>

     */

    public static class Calls implements BaseColumns {

        /**