Add Wait* API to ActionRunner to wrap over WaitAction.

tools/perf/page_sets/tough_energy_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.
 # pylint: disable=W0401,W0614
 from telemetry.page.actions.all_page_actions import *
 from telemetry.page import page as page_module
 from telemetry.page import page_set as page_set_module
 
 
 class ToughEnergyCasesPage(page_module.Page):
 
   def __init__(self, url, page_set):
     super(ToughEnergyCasesPage, self).__init__(url=url, page_set=page_set)
     self.credentials_path = 'data/credentials.json'
 
 
 class GmailPage(ToughEnergyCasesPage):
 
   """ Why: productivity, top google properties """
 
   def __init__(self, page_set):
     super(GmailPage, self).__init__(
       url='https://mail.google.com/mail/',
       page_set=page_set)
 
     self.credentials = 'google'
 
   def RunNavigateSteps(self, action_runner):
     action_runner.NavigateToPage(self)
-    action_runner.RunAction(WaitAction(
-      {
-        'javascript': (
-          'window.gmonkey !== undefined &&'
-          'document.getElementById("gb") !== null')
-      }))
+    action_runner.WaitForJavaScriptCondition(
+        'window.gmonkey !== undefined &&'
+        'document.getElementById("gb") !== null')
 
 
 class ToughEnergyCasesPageSet(page_set_module.PageSet):
 
   """ Pages for measuring Chrome power draw. """
 
   def __init__(self):
     super(ToughEnergyCasesPageSet, self).__init__(
       credentials_path='data/credentials.json')
 
     # Why: Above the fold animated gif running in the background
     self.AddPage(ToughEnergyCasesPage(
       'file://tough_energy_cases/above-fold-animated-gif.html',
       self))
     self.AddPage(GmailPage(self))
     # Why: Below the fold animated gif
     self.AddPage(ToughEnergyCasesPage(
       'file://tough_energy_cases/below-fold-animated-gif.html',
       self))
     # Why: Below the fold flash animation
     self.AddPage(ToughEnergyCasesPage(
       'file://tough_energy_cases/below-fold-flash.html',
       self))