diff --git a/wp-includes/class-walker-page-dropdown.php b/wp-includes/class-walker-page-dropdown.php
new file mode 100644
index 0000000000..ab6c222c30
--- /dev/null
+++ b/wp-includes/class-walker-page-dropdown.php
@@ -0,0 +1,73 @@
+<?php
+/**
+ * Post API: Walker_PageDropdown class
+ *
+ * @package WordPress
+ * @subpackage Template
+ * @since 4.4.0
+ */
+
+/**
+ * Create HTML dropdown list of pages.
+ *
+ * @since 2.1.0
+ * @uses Walker
+ */
+class Walker_PageDropdown extends Walker {
+	/**
+	 * @see Walker::$tree_type
+	 * @since 2.1.0
+	 * @var string
+	 */
+	public $tree_type = 'page';
+
+	/**
+	 * @see Walker::$db_fields
+	 * @since 2.1.0
+	 * @todo Decouple this
+	 * @var array
+	 */
+	public $db_fields = array ('parent' => 'post_parent', 'id' => 'ID');
+
+	/**
+	 * @see Walker::start_el()
+	 * @since 2.1.0
+	 *
+	 * @param string $output Passed by reference. Used to append additional content.
+	 * @param object $page   Page data object.
+	 * @param int    $depth  Depth of page in reference to parent pages. Used for padding.
+	 * @param array  $args   Uses 'selected' argument for selected page to set selected HTML attribute for option
+	 *                       element. Uses 'value_field' argument to fill "value" attribute. See {@see wp_dropdown_pages()}.
+	 * @param int    $id
+	 */
+	public function start_el( &$output, $page, $depth = 0, $args = array(), $id = 0 ) {
+		$pad = str_repeat('&nbsp;', $depth * 3);
+
+		if ( ! isset( $args['value_field'] ) || ! isset( $page->{$args['value_field']} ) ) {
+			$args['value_field'] = 'ID';
+		}
+
+		$output .= "\t<option class=\"level-$depth\" value=\"" . esc_attr( $page->{$args['value_field']} ) . "\"";
+		if ( $page->ID == $args['selected'] )
+			$output .= ' selected="selected"';
+		$output .= '>';
+
+		$title = $page->post_title;
+		if ( '' === $title ) {
+			/* translators: %d: ID of a post */
+			$title = sprintf( __( '#%d (no title)' ), $page->ID );
+		}
+
+		/**
+		 * Filter the page title when creating an HTML drop-down list of pages.
+		 *
+		 * @since 3.1.0
+		 *
+		 * @param string $title Page title.
+		 * @param object $page  Page data object.
+		 */
+		$title = apply_filters( 'list_pages', $title, $page );
+		$output .= $pad . esc_html( $title );
+		$output .= "</option>\n";
+	}
+}
diff --git a/wp-includes/class-walker-page.php b/wp-includes/class-walker-page.php
new file mode 100644
index 0000000000..5b21a050b5
--- /dev/null
+++ b/wp-includes/class-walker-page.php
@@ -0,0 +1,154 @@
+<?php
+/**
+ * Post API: Walker_Page class
+ *
+ * @package WordPress
+ * @subpackage Template
+ * @since 4.4.0
+ */
+
+/**
+ * Create HTML list of pages.
+ *
+ * @since 2.1.0
+ * @uses Walker
+ */
+class Walker_Page extends Walker {
+	/**
+	 * @see Walker::$tree_type
+	 * @since 2.1.0
+	 * @var string
+	 */
+	public $tree_type = 'page';
+
+	/**
+	 * @see Walker::$db_fields
+	 * @since 2.1.0
+	 * @todo Decouple this.
+	 * @var array
+	 */
+	public $db_fields = array ('parent' => 'post_parent', 'id' => 'ID');
+
+	/**
+	 * @see Walker::start_lvl()
+	 * @since 2.1.0
+	 *
+	 * @param string $output Passed by reference. Used to append additional content.
+	 * @param int    $depth  Depth of page. Used for padding.
+	 * @param array  $args
+	 */
+	public function start_lvl( &$output, $depth = 0, $args = array() ) {
+		$indent = str_repeat("\t", $depth);
+		$output .= "\n$indent<ul class='children'>\n";
+	}
+
+	/**
+	 * @see Walker::end_lvl()
+	 * @since 2.1.0
+	 *
+	 * @param string $output Passed by reference. Used to append additional content.
+	 * @param int    $depth  Depth of page. Used for padding.
+	 * @param array  $args
+	 */
+	public function end_lvl( &$output, $depth = 0, $args = array() ) {
+		$indent = str_repeat("\t", $depth);
+		$output .= "$indent</ul>\n";
+	}
+
+	/**
+	 * @see Walker::start_el()
+	 * @since 2.1.0
+	 *
+	 * @param string $output       Passed by reference. Used to append additional content.
+	 * @param object $page         Page data object.
+	 * @param int    $depth        Depth of page. Used for padding.
+	 * @param int    $current_page Page ID.
+	 * @param array  $args
+	 */
+	public function start_el( &$output, $page, $depth = 0, $args = array(), $current_page = 0 ) {
+		if ( $depth ) {
+			$indent = str_repeat( "\t", $depth );
+		} else {
+			$indent = '';
+		}
+
+		$css_class = array( 'page_item', 'page-item-' . $page->ID );
+
+		if ( isset( $args['pages_with_children'][ $page->ID ] ) ) {
+			$css_class[] = 'page_item_has_children';
+		}
+
+		if ( ! empty( $current_page ) ) {
+			$_current_page = get_post( $current_page );
+			if ( $_current_page && in_array( $page->ID, $_current_page->ancestors ) ) {
+				$css_class[] = 'current_page_ancestor';
+			}
+			if ( $page->ID == $current_page ) {
+				$css_class[] = 'current_page_item';
+			} elseif ( $_current_page && $page->ID == $_current_page->post_parent ) {
+				$css_class[] = 'current_page_parent';
+			}
+		} elseif ( $page->ID == get_option('page_for_posts') ) {
+			$css_class[] = 'current_page_parent';
+		}
+
+		/**
+		 * Filter the list of CSS classes to include with each page item in the list.
+		 *
+		 * @since 2.8.0
+		 *
+		 * @see wp_list_pages()
+		 *
+		 * @param array   $css_class    An array of CSS classes to be applied
+		 *                             to each list item.
+		 * @param WP_Post $page         Page data object.
+		 * @param int     $depth        Depth of page, used for padding.
+		 * @param array   $args         An array of arguments.
+		 * @param int     $current_page ID of the current page.
+		 */
+		$css_classes = implode( ' ', apply_filters( 'page_css_class', $css_class, $page, $depth, $args, $current_page ) );
+
+		if ( '' === $page->post_title ) {
+			/* translators: %d: ID of a post */
+			$page->post_title = sprintf( __( '#%d (no title)' ), $page->ID );
+		}
+
+		$args['link_before'] = empty( $args['link_before'] ) ? '' : $args['link_before'];
+		$args['link_after'] = empty( $args['link_after'] ) ? '' : $args['link_after'];
+
+		/** This filter is documented in wp-includes/post-template.php */
+		$output .= $indent . sprintf(
+			'<li class="%s"><a href="%s">%s%s%s</a>',
+			$css_classes,
+			get_permalink( $page->ID ),
+			$args['link_before'],
+			apply_filters( 'the_title', $page->post_title, $page->ID ),
+			$args['link_after']
+		);
+
+		if ( ! empty( $args['show_date'] ) ) {
+			if ( 'modified' == $args['show_date'] ) {
+				$time = $page->post_modified;
+			} else {
+				$time = $page->post_date;
+			}
+
+			$date_format = empty( $args['date_format'] ) ? '' : $args['date_format'];
+			$output .= " " . mysql2date( $date_format, $time );
+		}
+	}
+
+	/**
+	 * @see Walker::end_el()
+	 * @since 2.1.0
+	 *
+	 * @param string $output Passed by reference. Used to append additional content.
+	 * @param object $page Page data object. Not used.
+	 * @param int    $depth Depth of page. Not Used.
+	 * @param array  $args
+	 */
+	public function end_el( &$output, $page, $depth = 0, $args = array() ) {
+		$output .= "</li>\n";
+	}
+
+}
diff --git a/wp-includes/post-template.php b/wp-includes/post-template.php
index 09c7707417..f2354bc37e 100644
--- a/wp-includes/post-template.php
+++ b/wp-includes/post-template.php
@@ -1321,217 +1321,6 @@ function walk_page_dropdown_tree() {
 	return call_user_func_array(array($walker, 'walk'), $args);
 }
 
-/**
- * Create HTML list of pages.
- *
- * @since 2.1.0
- * @uses Walker
- */
-class Walker_Page extends Walker {
-	/**
-	 * @see Walker::$tree_type
-	 * @since 2.1.0
-	 * @var string
-	 */
-	public $tree_type = 'page';
-
-	/**
-	 * @see Walker::$db_fields
-	 * @since 2.1.0
-	 * @todo Decouple this.
-	 * @var array
-	 */
-	public $db_fields = array ('parent' => 'post_parent', 'id' => 'ID');
-
-	/**
-	 * @see Walker::start_lvl()
-	 * @since 2.1.0
-	 *
-	 * @param string $output Passed by reference. Used to append additional content.
-	 * @param int    $depth  Depth of page. Used for padding.
-	 * @param array  $args
-	 */
-	public function start_lvl( &$output, $depth = 0, $args = array() ) {
-		$indent = str_repeat("\t", $depth);
-		$output .= "\n$indent<ul class='children'>\n";
-	}
-
-	/**
-	 * @see Walker::end_lvl()
-	 * @since 2.1.0
-	 *
-	 * @param string $output Passed by reference. Used to append additional content.
-	 * @param int    $depth  Depth of page. Used for padding.
-	 * @param array  $args
-	 */
-	public function end_lvl( &$output, $depth = 0, $args = array() ) {
-		$indent = str_repeat("\t", $depth);
-		$output .= "$indent</ul>\n";
-	}
-
-	/**
-	 * @see Walker::start_el()
-	 * @since 2.1.0
-	 *
-	 * @param string $output       Passed by reference. Used to append additional content.
-	 * @param object $page         Page data object.
-	 * @param int    $depth        Depth of page. Used for padding.
-	 * @param int    $current_page Page ID.
-	 * @param array  $args
-	 */
-	public function start_el( &$output, $page, $depth = 0, $args = array(), $current_page = 0 ) {
-		if ( $depth ) {
-			$indent = str_repeat( "\t", $depth );
-		} else {
-			$indent = '';
-		}
-
-		$css_class = array( 'page_item', 'page-item-' . $page->ID );
-
-		if ( isset( $args['pages_with_children'][ $page->ID ] ) ) {
-			$css_class[] = 'page_item_has_children';
-		}
-
-		if ( ! empty( $current_page ) ) {
-			$_current_page = get_post( $current_page );
-			if ( $_current_page && in_array( $page->ID, $_current_page->ancestors ) ) {
-				$css_class[] = 'current_page_ancestor';
-			}
-			if ( $page->ID == $current_page ) {
-				$css_class[] = 'current_page_item';
-			} elseif ( $_current_page && $page->ID == $_current_page->post_parent ) {
-				$css_class[] = 'current_page_parent';
-			}
-		} elseif ( $page->ID == get_option('page_for_posts') ) {
-			$css_class[] = 'current_page_parent';
-		}
-
-		/**
-		 * Filter the list of CSS classes to include with each page item in the list.
-		 *
-		 * @since 2.8.0
-		 *
-		 * @see wp_list_pages()
-		 *
-		 * @param array   $css_class    An array of CSS classes to be applied
-		 *                             to each list item.
-		 * @param WP_Post $page         Page data object.
-		 * @param int     $depth        Depth of page, used for padding.
-		 * @param array   $args         An array of arguments.
-		 * @param int     $current_page ID of the current page.
-		 */
-		$css_classes = implode( ' ', apply_filters( 'page_css_class', $css_class, $page, $depth, $args, $current_page ) );
-
-		if ( '' === $page->post_title ) {
-			/* translators: %d: ID of a post */
-			$page->post_title = sprintf( __( '#%d (no title)' ), $page->ID );
-		}
-
-		$args['link_before'] = empty( $args['link_before'] ) ? '' : $args['link_before'];
-		$args['link_after'] = empty( $args['link_after'] ) ? '' : $args['link_after'];
-
-		/** This filter is documented in wp-includes/post-template.php */
-		$output .= $indent . sprintf(
-			'<li class="%s"><a href="%s">%s%s%s</a>',
-			$css_classes,
-			get_permalink( $page->ID ),
-			$args['link_before'],
-			apply_filters( 'the_title', $page->post_title, $page->ID ),
-			$args['link_after']
-		);
-
-		if ( ! empty( $args['show_date'] ) ) {
-			if ( 'modified' == $args['show_date'] ) {
-				$time = $page->post_modified;
-			} else {
-				$time = $page->post_date;
-			}
-
-			$date_format = empty( $args['date_format'] ) ? '' : $args['date_format'];
-			$output .= " " . mysql2date( $date_format, $time );
-		}
-	}
-
-	/**
-	 * @see Walker::end_el()
-	 * @since 2.1.0
-	 *
-	 * @param string $output Passed by reference. Used to append additional content.
-	 * @param object $page Page data object. Not used.
-	 * @param int    $depth Depth of page. Not Used.
-	 * @param array  $args
-	 */
-	public function end_el( &$output, $page, $depth = 0, $args = array() ) {
-		$output .= "</li>\n";
-	}
-
-}
-
-/**
- * Create HTML dropdown list of pages.
- *
- * @since 2.1.0
- * @uses Walker
- */
-class Walker_PageDropdown extends Walker {
-	/**
-	 * @see Walker::$tree_type
-	 * @since 2.1.0
-	 * @var string
-	 */
-	public $tree_type = 'page';
-
-	/**
-	 * @see Walker::$db_fields
-	 * @since 2.1.0
-	 * @todo Decouple this
-	 * @var array
-	 */
-	public $db_fields = array ('parent' => 'post_parent', 'id' => 'ID');
-
-	/**
-	 * @see Walker::start_el()
-	 * @since 2.1.0
-	 *
-	 * @param string $output Passed by reference. Used to append additional content.
-	 * @param object $page   Page data object.
-	 * @param int    $depth  Depth of page in reference to parent pages. Used for padding.
-	 * @param array  $args   Uses 'selected' argument for selected page to set selected HTML attribute for option
-	 *                       element. Uses 'value_field' argument to fill "value" attribute. See {@see wp_dropdown_pages()}.
-	 * @param int    $id
-	 */
-	public function start_el( &$output, $page, $depth = 0, $args = array(), $id = 0 ) {
-		$pad = str_repeat('&nbsp;', $depth * 3);
-
-		if ( ! isset( $args['value_field'] ) || ! isset( $page->{$args['value_field']} ) ) {
-			$args['value_field'] = 'ID';
-		}
-
-		$output .= "\t<option class=\"level-$depth\" value=\"" . esc_attr( $page->{$args['value_field']} ) . "\"";
-		if ( $page->ID == $args['selected'] )
-			$output .= ' selected="selected"';
-		$output .= '>';
-
-		$title = $page->post_title;
-		if ( '' === $title ) {
-			/* translators: %d: ID of a post */
-			$title = sprintf( __( '#%d (no title)' ), $page->ID );
-		}
-
-		/**
-		 * Filter the page title when creating an HTML drop-down list of pages.
-		 *
-		 * @since 3.1.0
-		 *
-		 * @param string $title Page title.
-		 * @param object $page  Page data object.
-		 */
-		$title = apply_filters( 'list_pages', $title, $page );
-		$output .= $pad . esc_html( $title );
-		$output .= "</option>\n";
-	}
-}
-
 //
 // Attachments
 //
diff --git a/wp-includes/post.php b/wp-includes/post.php
index 5ab158687a..42a479e3db 100644
--- a/wp-includes/post.php
+++ b/wp-includes/post.php
@@ -7,5 +7,14 @@
  * @since 1.5.0
  */
 
+/** Core posts functionality */
 require_once( ABSPATH . WPINC . '/post-functions.php' );
+
+/** Walker_Page class */
+require_once( ABSPATH . WPINC . '/class-walker-page.php' );
+
+/** Walker_PageDropdown class */
+require_once( ABSPATH . WPINC . '/class-walker-page-dropdown.php' );
+
+/** WP_Post class */
 require_once( ABSPATH . WPINC . '/class-wp-post.php' );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 3ae183aeca..1238a69f52 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-alpha-34108';
+$wp_version = '4.4-alpha-34109';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.