Modify power_LoadTest Extension to pull in test parameters.

client/site_tests/power_LoadTest/control

Index: client/site_tests/power_LoadTest/control
diff --git a/client/site_tests/power_LoadTest/control b/client/site_tests/power_LoadTest/control
index ad7ea64cc424f3959d5dad81a3a558694b27cea5..fb15fa47f67932aff6f66acec8b327348350d6cd 100755
--- a/client/site_tests/power_LoadTest/control
+++ b/client/site_tests/power_LoadTest/control
@@ -1,4 +1,4 @@
-# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+# Copyright (c) 2011 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.
 
@@ -25,11 +25,7 @@ before this test can be run:
 You are now ready to run the test.
 """
 
-# TODO (bleung): Find a way to do automatic Facebook and Gmail login in
-# perf test account.
-# TODO (bleung): Seconds variable is used here, but is not in power_LoadTest
-# because of the change to packed external extension. Change ext to take arg.
-
+# TODO (bleung): Find a way to do automatic Facebook login for test account.
 
 import time