Refactory UI to grab shortcut keys, and tests to not look for triggers.

client/site_tests/suite_Factory/test_list

 # -*- coding: utf-8 -*-
 #
 # 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.
 
 # DOCUMENTATION:
 #
 # Define below an ordered list if tests for execution on factory
 # assembly lines.  This list can be customized for specific factory
@@ skipping 134 matching lines @@
         label_en='camera',
         label_zw='相機',
         autotest_name='factory_Camera',
         kbd_shortcut='c'),
 
     OperatorTest(
         label_en='audio',
         label_zw='音源裝置',
         autotest_name='factory_Audio',
         kbd_shortcut='a',
-        dargs={'sample':'deps/factory/fhorn.wav'}),
+        dargs={'audio_sample_path':'fhorn.wav'}),
 
     OperatorTest(
         label_en='usb',
         autotest_name='factory_ExternalStorage',
         kbd_shortcut='u',
         dargs={'media':'USB'}),
 
     OperatorTest(
         label_en='sd',
         autotest_name='factory_ExternalStorage',
@@ skipping 83 matching lines @@
                       'wipe test image!...\n'
                       '請按下 TAB+ENTER 啟用寫入保護以及清除'
                       '測試程式資料!...')}),
 
     InformationScreen(
         label_en='review',
         label_zw='報告',
         autotest_name='factory_Review',
         kbd_shortcut='z'),
 ]