The patch is simple enough:

diff --git a/panels/background/bg-pictures-source.c b/panels/background/bg-pictures-source.c
index 5f2a02c..228803a 100644
--- a/panels/background/bg-pictures-source.c
+++ b/panels/background/bg-pictures-source.c
@@ -240,7 +240,8 @@ add_single_file (BgPicturesSource *bg_source,
     return FALSE;
 
   if (g_str_equal ("image/png", content_type) ||
-      g_str_equal ("image/jpeg", content_type))
+      g_str_equal ("image/jpeg", content_type) ||
+      g_str_equal ("image/svg+xml", content_type))
     {
       CcBackgroundItem *item;
       char *uri;

But, I would guess that the majority of svg images that one would use as backgrounds would be semi-transparent ones. I couldn't see either of the images I selected when using nautilus, see bug 648882.

diff --git a/panels/background/cc-background-panel.c b/panels/background/cc-back
index 2ba9c56..a8a9a9b 100644
--- a/panels/background/cc-background-panel.c
+++ b/panels/background/cc-background-panel.c
@@ -957,8 +957,7 @@ add_button_clicked (GtkButton         *button,
   priv = panel->priv;
 
   filter = gtk_file_filter_new ();
-  gtk_file_filter_add_mime_type (filter, "image/png");
-  gtk_file_filter_add_mime_type (filter, "image/jpeg");
+  gtk_file_filter_add_mime_type (filter, "image/*");
 
   chooser = gtk_file_chooser_dialog_new (_("Browse for more pictures"),
                                         GTK_WINDOW (gtk_widget_get_toplevel (WI


is also needed

Fixed in master

It hasn't been pushed, and still has the same problem I mentioned in comment 1. Why did you commit (and not push) this?