Introduce PageCyclerStory and let the stories wait for onload+TTI

tools/perf/page_sets/page_cycler_story.py

+# Copyright 2016 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.page import page

[petrcermak, 2016/08/15 10:49:30]

ditto

[kouhei (in TOK), 2016/08/22 06:09:21]

Done.

+from telemetry.page import cache_temperature as cache_temperature_module
+from telemetry.page import shared_page_state
+
+_TTI_WAIT_TIME = 5

[nednguyen, 2016/08/15 14:00:46]

Should this by 10s since TTI requires a 5s window?

[kouhei (in TOK), 2016/08/22 06:09:21]

Done.

+
+class PageCyclerStory(page.Page):
+
+  def __init__(self, url, page_set,
+      shared_page_state_class=shared_page_state.SharedDesktopPageState,
+      cache_temperature=cache_temperature_module.ANY):

[petrcermak, 2016/08/15 10:49:30]

maybe pass *args and **kwargs to the super constructor?

+    super(PageCyclerStory, self).__init__(
+        url=url, page_set=page_set,
+        shared_page_state_class=shared_page_state_class,
+        cache_temperature=cache_temperature)
+
+  def RunPageInteractions(self, action_runner):
+    action_runner.tab.WaitForDocumentReadyStateToBeComplete()
+    action_runner.Wait(_TTI_WAIT_TIME)