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

tools/perf/page_sets/tough_scrolling_cases.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
 
 
 class ToughScrollingCasesPage(page_module.Page):
 
   def __init__(self, url, page_set):
@@ skipping 38 matching lines @@
       'file://tough_scrolling_cases/div_scrolls.html',
       'file://tough_scrolling_cases/fixed_nonstacking.html',
       'file://tough_scrolling_cases/fixed_stacking.html',
       'file://tough_scrolling_cases/iframe_scrolls.html',
       'file://tough_scrolling_cases/simple.html',
       'file://tough_scrolling_cases/wheel_body_prevdefault.html',
       'file://tough_scrolling_cases/wheel_div_prevdefault.html'
     ]
 
     for url in urls_list:
-      self.AddPage(ToughScrollingCasesPage(url, self))
+      self.AddUserStory(ToughScrollingCasesPage(url, self))
 
     fast_scrolling_page_name_list = [
       'text',
       'canvas'
     ]
 
     fast_scrolling_speed_list = [
       5000, 10000, 15000, 20000, 30000, 40000, 50000, 60000, 75000, 90000
     ]
 
     for name in fast_scrolling_page_name_list:
       for speed in fast_scrolling_speed_list:
-        self.AddPage(ToughFastScrollingCasesPage(
+        self.AddUserStory(ToughFastScrollingCasesPage(
           'file://tough_scrolling_cases/' + name + '.html',
           name + '_' + str(speed).zfill(5) + '_pixels_per_second',
           speed,
           self))