[Telemetry] Modify CreatePageSet to CreateStorySet

tools/perf/benchmarks/spaceport.py

 # Copyright 2012 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.
 
 """Runs spaceport.io's PerfMarks benchmark."""
 
 import logging
 import os
 
 from core import perf_benchmark
@@ skipping 94 matching lines @@
   This test performs 3 animations (rotate, translate, scale) using a variety of
   methods (css, webgl, canvas, etc) and reports the number of objects that can
   be simultaneously animated while still achieving 30FPS.
   """
   test = _SpaceportMeasurement
 
   @classmethod
   def Name(cls):
     return 'spaceport'
 
-  def CreatePageSet(self, options):
+  def CreateStorySet(self, options):
     spaceport_dir = os.path.join(util.GetChromiumSrcDir(), 'chrome', 'test',
         'data', 'third_party', 'spaceport')
     ps = page_set.PageSet(base_dir=spaceport_dir)
     ps.AddUserStory(page_module.Page('file://index.html', ps, ps.base_dir))
     return ps