Index: wp-admin/includes/plugin.php
===================================================================
--- wp-admin/includes/plugin.php	(revision 35337)
+++ wp-admin/includes/plugin.php	(working copy)
@@ -99,7 +99,7 @@
 		$plugin_data['AuthorName'] = $plugin_data['Author'];
 	}
 
-	return $plugin_data;
+	return apply_filters('plugin_header_data', $plugin_data);
 }
 
 /**
Index: wp-includes/functions.php
===================================================================
--- wp-includes/functions.php	(revision 35337)
+++ wp-includes/functions.php	(working copy)
@@ -4446,7 +4446,7 @@
 			$all_headers[ $field ] = '';
 	}
 
-	return $all_headers;
+	return apply_filters('theme_header_data', $all_headers);
 }
 
 /**