Rename AddPage -> AddUserStory in tools/perf/page_sets/.

tools/perf/page_sets/top_7_stress.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.page import page as page_module
 from telemetry.page import page_set as page_set_module
 
 
 def _GetCurrentLocation(action_runner):
   return action_runner.EvaluateJavaScript('document.location.href')
 
@@ skipping 315 matching lines @@
 class Top7StressPageSet(page_set_module.PageSet):
 
   """ Pages hand-picked for stress testing. """
 
   def __init__(self):
     super(Top7StressPageSet, self).__init__(
       user_agent_type='desktop',
       archive_data_file='data/top_25.json',
       bucket=page_set_module.PARTNER_BUCKET)
 
-    self.AddPage(GoogleWebSearchPage(self))
-    self.AddPage(GmailPage(self))
-    self.AddPage(GoogleCalendarPage(self))
-    self.AddPage(GooglePlusPage(self))
-    self.AddPage(BlogspotPage(self))
-    self.AddPage(WordpressPage(self))
-    self.AddPage(FacebookPage(self))
+    self.AddUserStory(GoogleWebSearchPage(self))
+    self.AddUserStory(GmailPage(self))
+    self.AddUserStory(GoogleCalendarPage(self))
+    self.AddUserStory(GooglePlusPage(self))
+    self.AddUserStory(BlogspotPage(self))
+    self.AddUserStory(WordpressPage(self))
+    self.AddUserStory(FacebookPage(self))