Create an instance of GDBusProxy with G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES flag.

Create an instance of GDBusProxy with G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES flag.

Without the flag, on_name_owner_changed() in glib-2.26.x/gio/gdbusproxy.c might invoke a remote method named GetAll in org.freedesktop.DBus.Properties interface, but the method is not implemented in ibus-daemon. Since ibus-daemon ignores the method call, the caller, which is UI thread of Chrome on Chromium OS, will block for 25 seconds (i.e. the default timeout of GDBus) waiting for a reply.

BUG=none
TEST=manually

Review URL: http://codereview.appspot.com/3836042