[Telemetry] Replace RunStressMemorey with RunPageInteraction

tools/perf/page_sets/tough_dom_memory_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 ToughDomMemoryCasesPage(page_module.Page):
 
   def __init__(self, url, page_set):
     super(ToughDomMemoryCasesPage, self).__init__(url=url, page_set=page_set)
     self.user_agent_type = 'desktop'
     self.archive_data_file = 'data/tough_dom_memory_cases.json'
 
-  def RunStressMemory(self, action_runner):
+  def RunPageInteractions(self, action_runner):
     interaction = action_runner.BeginGestureInteraction(
         'ScrollAction', is_smooth=True)
     action_runner.ScrollPage()
     interaction.End()
 
 class ToughDomMemoryCasesPageSet(page_set_module.PageSet):
 
   """
   Websites in top 25 where some DOM objects seem to remain even
   after closing the page.
@@ skipping 14 matching lines @@
       'http://en.blog.wordpress.com/2012/09/20/new-themes-gigawatt-and-pinboard/',
       # pylint: disable=C0301
       'https://twitter.com/katyperry',
       'https://twitter.com/justinbieber',
       'https://twitter.com/BarackObama',
       'https://twitter.com/ladygaga'
     ]
 
     for url in urls_list:
       self.AddPage(ToughDomMemoryCasesPage(url, self))