[Telemetry refactor] Drop "2" from method calls to JS API

tools/perf/page_sets/tough_path_rendering_cases.py

 # Copyright 2015 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 import story
 
 
 class ToughPathRenderingCasesPage(page_module.Page):
   def RunPageInteractions(self, action_runner):
     with action_runner.CreateInteraction('ClickStart'):
       action_runner.Wait(10)
 
 
 class ChalkboardPage(page_module.Page):
 
   def RunPageInteractions(self, action_runner):
     with action_runner.CreateInteraction('ClickStart'):
-      action_runner.EvaluateJavaScript2(
+      action_runner.EvaluateJavaScript(
           'document.getElementById("StartButton").click()')
       action_runner.Wait(20)
 
 class ToughPathRenderingCasesPageSet(story.StorySet):
 
   """
   Description: Self-driven path rendering examples
   """
 
   def __init__(self):
@@ skipping 11 matching lines @@
     ]
 
     for name, url in page_list:
       self.AddStory(ToughPathRenderingCasesPage(name=name, url=url,
           page_set=self))
 
     # Chalkboard content linked from
     # http://ie.microsoft.com/testdrive/Performance/Chalkboard/.
     self.AddStory(ChalkboardPage(
         'https://testdrive-archive.azurewebsites.net/performance/chalkboard/', self))