diff -r 490d5cc509ed -r cf61fcea0001 wp/wp-includes/customize/class-wp-customize-background-position-control.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/customize/class-wp-customize-background-position-control.php	Mon Oct 14 17:39:30 2019 +0200
@@ -0,0 +1,84 @@
+<?php
+/**
+ * Customize API: WP_Customize_Background_Position_Control class
+ *
+ * @package WordPress
+ * @subpackage Customize
+ * @since 4.7.0
+ */
+
+/**
+ * Customize Background Position Control class.
+ *
+ * @since 4.7.0
+ *
+ * @see WP_Customize_Control
+ */
+class WP_Customize_Background_Position_Control extends WP_Customize_Control {
+
+	/**
+	 * Type.
+	 *
+	 * @since 4.7.0
+	 * @var string
+	 */
+	public $type = 'background_position';
+
+	/**
+	 * Don't render the control content from PHP, as it's rendered via JS on load.
+	 *
+	 * @since 4.7.0
+	 */
+	public function render_content() {}
+
+	/**
+	 * Render a JS template for the content of the position control.
+	 *
+	 * @since 4.7.0
+	 */
+	public function content_template() {
+		$options = array(
+			array(
+				'left top'   => array( 'label' => __( 'Top Left' ), 'icon' => 'dashicons dashicons-arrow-left-alt' ),
+				'center top' => array( 'label' => __( 'Top' ), 'icon' => 'dashicons dashicons-arrow-up-alt' ),
+				'right top'  => array( 'label' => __( 'Top Right' ), 'icon' => 'dashicons dashicons-arrow-right-alt' ),
+			),
+			array(
+				'left center'   => array( 'label' => __( 'Left' ), 'icon' => 'dashicons dashicons-arrow-left-alt' ),
+				'center center' => array( 'label' => __( 'Center' ), 'icon' => 'background-position-center-icon' ),
+				'right center'  => array( 'label' => __( 'Right' ), 'icon' => 'dashicons dashicons-arrow-right-alt' ),
+			),
+			array(
+				'left bottom'   => array( 'label' => __( 'Bottom Left' ), 'icon' => 'dashicons dashicons-arrow-left-alt' ),
+				'center bottom' => array( 'label' => __( 'Bottom' ), 'icon' => 'dashicons dashicons-arrow-down-alt' ),
+				'right bottom'  => array( 'label' => __( 'Bottom Right' ), 'icon' => 'dashicons dashicons-arrow-right-alt' ),
+			),
+		);
+		?>
+		<# if ( data.label ) { #>
+			<span class="customize-control-title">{{{ data.label }}}</span>
+		<# } #>
+		<# if ( data.description ) { #>
+			<span class="description customize-control-description">{{{ data.description }}}</span>
+		<# } #>
+		<div class="customize-control-content">
+			<fieldset>
+				<legend class="screen-reader-text"><span><?php _e( 'Image Position' ); ?></span></legend>
+				<div class="background-position-control">
+				<?php foreach ( $options as $group ) : ?>
+					<div class="button-group">
+					<?php foreach ( $group as $value => $input ) : ?>
+						<label>
+							<input class="screen-reader-text" name="background-position" type="radio" value="<?php echo esc_attr( $value ); ?>">
+							<span class="button display-options position"><span class="<?php echo esc_attr( $input['icon'] ); ?>" aria-hidden="true"></span></span>
+							<span class="screen-reader-text"><?php echo $input['label']; ?></span>
+						</label>
+					<?php endforeach; ?>
+					</div>
+				<?php endforeach; ?>
+				</div>
+			</fieldset>
+		</div>
+		<?php
+	}
+}