[Telemetry] Support downloading profiles from cloud storage

tools/perf/benchmarks/startup_with_extensions.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 StartupColdTheme(test.Test):

[tonyg, 2014/01/06 18:53:55]

I recommend putting these in benchmarks/startup.py instead of a new file.

+  tag = 'theme_cold'
+  test = startup.Startup
+  page_set = 'page_sets/blank_page.json'
+  generated_profile_archive = 'theme_profile.zip'
+  options = {'cold': True,
+             'pageset_repeat_iters': 5}
+
+
+class StartupWarmTheme(test.Test):
+  tag = 'theme_warm'
+  test = startup.Startup
+  page_set = 'page_sets/blank_page.json'
+  generated_profile_archive = 'theme_profile.zip'
+  options = {'warm': True,
+             'pageset_repeat_iters': 20}
+
+class StartupColdManyExtensions(test.Test):
+  tag = 'many_extensions_cold'
+  test = startup.Startup
+  page_set = 'page_sets/blank_page.json'
+  generated_profile_archive = 'many_extensions_profile.zip'
+  options = {'cold': True,
+             'pageset_repeat_iters': 5}
+
+
+class StartupWarmManyExtensions(test.Test):
+  tag = 'many_extensions_warm'
+  test = startup.Startup
+  page_set = 'page_sets/blank_page.json'
+  generated_profile_archive = 'many_extensions_profile.zip'
+  options = {'warm': True,
+             'pageset_repeat_iters': 20}
+