[gnome-shell/wip/sass] Set style classes for extension download dialog

[Jakub Steiner <jimmac src gnome org>]

commit 5ead2f4efc36b9f08dd5393497ebb1af839f6645
Author: William Jon McCann <william jon mccann gmail com>
Date:   Mon Nov 10 10:09:09 2014 -0500

    Set style classes for extension download dialog
    
    So that the layout is correct.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=739888

 js/ui/extensionDownloader.js |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/js/ui/extensionDownloader.js b/js/ui/extensionDownloader.js
index 8a34821..6102eb1 100644
--- a/js/ui/extensionDownloader.js
+++ b/js/ui/extensionDownloader.js
@@ -203,14 +203,16 @@ const InstallExtensionDialog = new Lang.Class({
 
         let message = _("Download and install “%s” from extensions.gnome.org?").format(info.name);
 
-        let box = new St.BoxLayout();
+        let box = new St.BoxLayout({ style_class: 'prompt-dialog-main-layout',
+                                     vertical: false });
         this.contentLayout.add(box);
 
         let gicon = new Gio.FileIcon({ file: Gio.File.new_for_uri(REPOSITORY_URL_BASE + info.icon) })
         let icon = new St.Icon({ gicon: gicon });
         box.add(icon);
 
-        let label = new St.Label({ text: message });
+        let label = new St.Label({ style_class: 'prompt-dialog-headline',
+                                   text: message });
         box.add(label);
     },