Add a Telemetry based cold startup test.

tools/perf/run_measurement

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 import imp
 import os
 import sys
 import urllib
 
 # Directory path in which to save bootstrap files.
@@ skipping 65 matching lines @@
     "loading_measurement": "loading",
     "media_measurement": "media",
     "memory_benchmark": "memory",
     "memory_measurement": "memory",
     "rasterize_and_record_benchmark": "rasterize_and_record",
     "rasterize_and_record_measurement": "rasterize_and_record",
     "robohornetpro": "robohornet_pro",
     "scrolling_benchmark": "smoothness",
     "smoothness_benchmark": "smoothness",
     "smoothness_measurement": "smoothness",
-    "startup_benchmark": "startup_warm",
-    "startup_measurement": "startup_warm",
+    "startup_benchmark": "startup_warm_blank_page",
+    "startup_measurement": "startup",
     "tab_switching_measurement": "tab_switching",
   }
 
   # There are bots that are hard-coded to run some specific named tests.
   # Convert these to the current naming conventions by overriding them in the runner.
   class MeasurementRunner(page_measurement_runner.PageMeasurementRunner):
     def GetModernizedTestName(self, arg):
       if arg not in old_benchmark_names:
         return arg
       sys.stderr.write(
         'An old name %s was given. Please use %s in the future.\n' % (
           arg,
           old_benchmark_names.get(arg)))
       return old_benchmark_names[arg]
 
   runner = MeasurementRunner()
   sys.exit(runner.Run(os.path.dirname(__file__), page_set_filenames))
 
 if __name__ == '__main__':
   sys.exit(main())