Update perf page_set to use story_set

tools/perf/page_sets/intl_es_fr_pt-BR.py

Index: tools/perf/page_sets/intl_es_fr_pt-BR.py
diff --git a/tools/perf/page_sets/intl_es_fr_pt-BR.py b/tools/perf/page_sets/intl_es_fr_pt-BR.py
index c06e63393aeed5142fde8f40e8725ed521fd42d5..511eeffa3d539aefb4df5ddf21e2c3bed529680f 100644
--- a/tools/perf/page_sets/intl_es_fr_pt-BR.py
+++ b/tools/perf/page_sets/intl_es_fr_pt-BR.py
@@ -1,8 +1,8 @@
 # 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 page_set as page_set_module
 from telemetry.page import shared_page_state
 
 
@@ -15,7 +15,7 @@ class IntlEsFrPtBrPage(page_module.Page):
     self.archive_data_file = 'data/intl_es_fr_pt-BR.json'
 
 
-class IntlEsFrPtBrPageSet(page_set_module.PageSet):
+class IntlEsFrPtBrPageSet(story.StorySet):
 
   """
   Popular pages in Romance languages Spanish, French and Brazilian Portuguese.
@@ -24,7 +24,7 @@ class IntlEsFrPtBrPageSet(page_set_module.PageSet):
   def __init__(self):
     super(IntlEsFrPtBrPageSet, self).__init__(
       archive_data_file='data/intl_es_fr_pt-BR.json',
-      bucket=page_set_module.PARTNER_BUCKET)
+      cloud_storage_bucket=story.PARTNER_BUCKET)
 
     urls_list = [
       'http://elmundo.es/',