Add a Telemetry based cold startup test.

tools/perf/benchmarks/startup_cold.py

Index: tools/perf/benchmarks/startup_cold.py
diff --git a/tools/perf/benchmarks/startup_warm.py b/tools/perf/benchmarks/startup_cold.py
similarity index 64%
copy from tools/perf/benchmarks/startup_warm.py
copy to tools/perf/benchmarks/startup_cold.py
index b132052c00fd9d7bf3a3406012043c8b2f0e56fe..79c37aa5e9ea7390c0e7e4766eaf794996f13799 100644
--- a/tools/perf/benchmarks/startup_warm.py
+++ b/tools/perf/benchmarks/startup_cold.py
@@ -3,9 +3,10 @@
 # found in the LICENSE file.
 from telemetry import test
 
-from measurements import startup_warm
+from measurements import startup
 
 
-class StartupWarmBlankPage(test.Test):
-  test = startup_warm.StartupWarm
+class StartupColdBlankPage(test.Test):

[tonyg, 2013/08/08 01:16:35]

Let's just have a single benchmarks/startup.py file that has all startup related
Benchmarks in it.

[James Simonsen, 2013/08/08 02:06:07]

Done.

+  test = startup.StartupTest
   page_set = 'page_sets/blank_page.json'
+  options = {'cold': True}