[seahorse] Revert "Use g_file_info_get_content_type instead of g_content_type_guess"

[Jeff Cai <jeffcai src gnome org>]

commit 2153aab3cdd457732204a4988eb13c56d52fd567
Author: Jeff Cai <jeff cai sun com>
Date:   Wed Oct 21 11:23:24 2009 +0800

    Revert "Use g_file_info_get_content_type instead of g_content_type_guess"
    
    This reverts commit 38849c3de2465b731ac3564c5069d96b02549018.

 libseahorse/seahorse-util.c |   18 +++---------------
 1 files changed, 3 insertions(+), 15 deletions(-)
---
diff --git a/libseahorse/seahorse-util.c b/libseahorse/seahorse-util.c
index da343c7..138f162 100644
--- a/libseahorse/seahorse-util.c
+++ b/libseahorse/seahorse-util.c
@@ -846,26 +846,14 @@ GQuark
 seahorse_util_detect_file_type (const gchar *uri)
 {
 	gboolean uncertain;
-	gchar *mime = NULL;
+	gchar *mime;
 	GQuark type;
-	GFile *file;
-	GFileInfo *info;
-
-	file = g_file_new_for_uri (uri);
-	info = g_file_query_info (file,
-                G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE,
-                0,
-                NULL,
-                NULL);
-
-	g_return_val_if_fail (info, 0);
-
-	mime = g_file_info_get_content_type (info);
 	
+	mime = g_content_type_guess (uri, NULL, 0, &uncertain);
 	g_return_val_if_fail (mime, 0);
 	
 	type = seahorse_util_detect_mime_type (mime);
-	g_object_unref (info);
+	g_free (mime);
 	
 	return type;
 }