Press This: Add admin_head-like hooks that are specific to the page.

props sillybean.
fixes #18843.

Built from https://develop.svn.wordpress.org/trunk@25131


git-svn-id: http://core.svn.wordpress.org/trunk@25111 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/press-this.php

@@ -309,9 +309,13 @@ function image_selector(el) {
 </script>
 
 <?php
-	do_action('admin_print_styles');
-	do_action('admin_print_scripts');
-	do_action('admin_head');
+	do_action( 'admin_enqueue_scripts', 'press-this.php' );
+	do_action( 'admin_print_styles-press-this.php' );
+	do_action( 'admin_print_styles' );
+	do_action( 'admin_print_scripts-press-this.php' );
+	do_action( 'admin_print_scripts' );
+	do_action( 'admin_head-press-this.php' );
+	do_action( 'admin_head' );
 ?>
 	<script type="text/javascript">
 	var wpActiveEditor = 'content';