Update perf page_set to use story_set

tools/perf/page_sets/intl_hi_ru.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 story
+from telemetry.page import page as page_module
 from telemetry.page import shared_page_state
-from telemetry.page import page as page_module
-from telemetry.page import page_set as page_set_module
 
 
 class IntlHiRuPage(page_module.Page):
 
   def __init__(self, url, page_set):
     super(IntlHiRuPage, self).__init__(
         url=url, page_set=page_set,
         shared_page_state_class=shared_page_state.SharedDesktopPageState)
     self.archive_data_file = 'data/intl_hi_ru.json'
 
 
-class IntlHiRuPageSet(page_set_module.PageSet):
+class IntlHiRuPageSet(story.StorySet):
 
   """ Popular pages in Hindi and Russian. """
 
   def __init__(self):
     super(IntlHiRuPageSet, self).__init__(
       archive_data_file='data/intl_hi_ru.json',
-      bucket=page_set_module.PARTNER_BUCKET)
+      cloud_storage_bucket=story.PARTNER_BUCKET)
 
     urls_list = [
       # Why: #12 site in Russia
       'http://www.rambler.ru/',
       'http://apeha.ru/',
       # pylint: disable=C0301
       'http://yandex.ru/yandsearch?lr=102567&text=%D0%9F%D0%BE%D0%B3%D0%BE%D0%B4%D0%B0',
       'http://photofile.ru/',
       'http://ru.wikipedia.org/',
       'http://narod.yandex.ru/',
       # Why: #15 in Russia
       'http://rutracker.org/forum/index.php',
       'http://hindi.webdunia.com/',
       # Why: #49 site in India
       'http://hindi.oneindia.in/',
       # Why: #9 site in India
       'http://www.indiatimes.com/',
       # Why: #2 site in India
       'http://news.google.co.in/nwshp?tab=in&hl=hi'
     ]
 
     for url in urls_list:
       self.AddUserStory(IntlHiRuPage(url, self))