Add Wait* API to ActionRunner to wrap over WaitAction.

content/test/gpu/page_sets/gpu_process_tests.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 GpuProcessTestsPage(page_module.Page):
 
   def __init__(self, url, name, page_set):
     super(GpuProcessTestsPage, self).__init__(url=url, page_set=page_set,
                                               name=name)
     self.user_agent_type = 'desktop'
 
   def RunNavigateSteps(self, action_runner):
     action_runner.NavigateToPage(self)
 
 class FunctionalVideoPage(GpuProcessTestsPage):
 
   def __init__(self, page_set):
     super(FunctionalVideoPage, self).__init__(
       url='file://../../data/gpu/functional_video.html',
       name='GpuProcess.video',
       page_set=page_set)
 
   def RunNavigateSteps(self, action_runner):
     action_runner.NavigateToPage(self)
-    action_runner.RunAction(WaitAction(
-      {
-        'javascript': 'domAutomationController._finished',
-        'timeout': 30
-      }))
+    action_runner.WaitForJavaScriptCondition(
+        'domAutomationController._finished', timeout=30)
 
 
 class GpuProcessTestsPageSet(page_set_module.PageSet):
 
   """ Tests that accelerated content triggers the creation of a GPU process """
 
   def __init__(self):
     super(GpuProcessTestsPageSet, self).__init__(
       serving_dirs=set(['../../../../content/test/data']),
       user_agent_type='desktop')
 
     urls_and_names_list = [
       ('file://../../data/gpu/functional_canvas_demo.html',
        'GpuProcess.canvas2d'),
       ('file://../../data/gpu/functional_3d_css.html',
        'GpuProcess.css3d'),
       ('file://../../data/gpu/functional_webgl.html',
        'GpuProcess.webgl')
     ]
 
     for url, name in urls_and_names_list:
       self.AddPage(GpuProcessTestsPage(url, name, self))
 
     self.AddPage(FunctionalVideoPage(self))