Restore results of startup tests.

tools/perf/benchmarks/start_with_url.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 from telemetry import test
 
 from measurements import startup
 
 
 class StartWithUrlCold(test.Test):
   """Measure time to start Chrome cold with startup URLs"""
   tag = 'cold'
-  test = startup.Startup
+  test = startup.StartWithUrl
   page_set = 'page_sets/startup_pages.json'
   options = {'cold': True,
              'pageset_repeat_iters': 5}
 
 class StartWithUrlWarm(test.Test):
   """Measure time to start Chrome warm with startup URLs"""
   tag = 'warm'
-  test = startup.Startup
+  test = startup.StartWithUrl
   page_set = 'page_sets/startup_pages.json'
   options = {'warm': True,
              'pageset_repeat_iters': 10}