Revert of Temporarily decrease min-idle time for todomvc pagesets

tools/perf/page_sets/todomvc.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 as page_module
 from telemetry.page import shared_page_state
 from telemetry import story
 
 
 URL_LIST = [
@@ skipping 23 matching lines @@
     self.script_to_evaluate_on_commit = (
         'console.time("%s");' % INTERACTION_NAME)
 
   def RunPageInteractions(self, action_runner):
     action_runner.ExecuteJavaScript(
         """
         this.becameIdle = false;
         this.idleCallback = function(deadline) {
             let idletime = deadline.timeRemaining();
             console.time("time remaining: " + idletime);
-            if (idletime > 10)
+            if (idletime > 20)
                 this.becameIdle = true;
             else
                 requestIdleCallback(this.idleCallback);
             console.timeEnd("time remaining: " + idletime);
         };
         requestIdleCallback(this.idleCallback);
         """
     )
     action_runner.WaitForJavaScriptCondition('this.becameIdle === true')
     action_runner.ExecuteJavaScript('console.timeEnd("%s");' % INTERACTION_NAME)
 
 
 class TodoMVCPageSet(story.StorySet):
 
   """ TodoMVC examples """
 
   def __init__(self):
     super(TodoMVCPageSet, self).__init__(
       archive_data_file='data/todomvc.json',
       cloud_storage_bucket=story.PUBLIC_BUCKET)
 
     for name, url in URL_LIST:
       self.AddStory(TodoMVCPage(url, self, name))