XML-RPC: upgrade the resposnse of`wp_xmlrpc_server::mw_newMediaObject()` based on work down in 3.4 so that it runs the struct through `->_prepare_media_item()`.

Props markoheijnen.
Fixes #6430.

Built from https://develop.svn.wordpress.org/trunk@34579


git-svn-id: http://core.svn.wordpress.org/trunk@34543 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-xmlrpc-server.php

@@ -906,6 +906,7 @@ class wp_xmlrpc_server extends IXR_Server {
 			'caption'          => $media_item->post_excerpt,
 			'description'      => $media_item->post_content,
 			'metadata'         => wp_get_attachment_metadata( $media_item->ID ),
+			'type'             => $media_item->post_mime_type
 		);
 
 		$thumbnail_src = image_downsize( $media_item->ID, $thumbnail_size );
@@ -5770,12 +5771,12 @@ class wp_xmlrpc_server extends IXR_Server {
 		 */
 		do_action( 'xmlrpc_call_success_mw_newMediaObject', $id, $args );
 
-		$struct = array(
-			'id'   => strval( $id ),
-			'file' => $name,
-			'url'  => $upload[ 'url' ],
-			'type' => $upload[ 'type' ]
-		);
+		$struct = $this->_prepare_media_item( get_post( $id ) );
+
+		// Deprecated values
+		$struct['id']   = $struct['attachment_id'];
+		$struct['file'] = $struct['title'];
+		$struct['url']  = $struct['link'];
 
 		return $struct;
 	}

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-alpha-34578';
+$wp_version = '4.4-alpha-34579';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.