Fix waiting for ui on reboot.

client/bin/factory_ui

 #!/usr/bin/python
 #
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 
 # DESCRIPTION :
 #
 # This UI is intended to be used by the factory autotest suite to
@@ skipping 314 matching lines @@
 
     ful.hide_cursor(window.window)
 
     test_widget_allocation = test_widget_box.get_allocation()
     test_widget_size = (test_widget_allocation.width,
                         test_widget_allocation.height)
     factory.log_shared_data('test_widget_size', test_widget_size)
 
     console = Console(console_box.get_allocation())
 
+    print 'Factory UI ready.'
+    sys.stdout.flush()
+
     factory.log('factory_ui setup done, starting gtk.main()...')
 
     gtk.main()
 
     factory.log('factory_ui gtk.main() finished, exiting.')
 
 if __name__ == '__main__':
 
     if len(sys.argv) != 4:
         print ('usage: %s <test list path> <status file path> <control pid>' %
                sys.argv[0])
     test_list_path, status_file_path, control_pid_str = sys.argv[1:]
     control_pid = int(control_pid_str)
 
     execfile(test_list_path)
 
     main(TEST_LIST, status_file_path, control_pid)