Add Wait* API to ActionRunner to wrap over WaitAction.

tools/perf/page_sets/tough_compositor_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 ToughCompositorPage(page_module.Page):
 
   def __init__(self, url, page_set):
     super(ToughCompositorPage, self).__init__(url=url, page_set=page_set)
     self.credentials_path = 'data/credentials.json'
     self.user_agent_type = 'mobile'
     self.archive_data_file = 'data/tough_compositor_cases.json'
 
   def RunNavigateSteps(self, action_runner):
     action_runner.NavigateToPage(self)
     # TODO(epenner): Remove this wait (http://crbug.com/366933)
-    action_runner.RunAction(WaitAction({'seconds': 5}))
+    action_runner.Wait(5)
 
 class ToughCompositorScrollPage(ToughCompositorPage):
 
   def __init__(self, url, page_set):
     super(ToughCompositorScrollPage, self).__init__(url=url, page_set=page_set)
 
   def RunSmoothness(self, action_runner):
     # Make the scroll longer to reduce noise.
     scroll_down = ScrollAction()
     scroll_down.direction = "down"
     scroll_down.speed = 300
     action_runner.RunAction(scroll_down)
 
 class ToughCompositorWaitPage(ToughCompositorPage):
 
   def __init__(self, url, page_set):
     super(ToughCompositorWaitPage, self).__init__(url=url, page_set=page_set)
 
   def RunSmoothness(self, action_runner):
     # We scroll back and forth a few times to reduce noise in the tests.
-    action_runner.RunAction(WaitAction({'seconds': 8}))
+    action_runner.Wait(8)
 
 
 class ToughCompositorCasesPageSet(page_set_module.PageSet):
 
   """ Touch compositor sites """
 
   def __init__(self):
     super(ToughCompositorCasesPageSet, self).__init__(
       credentials_path='data/credentials.json',
       user_agent_type='mobile',
@@ skipping 17 matching lines @@
       'http://jsbin.com/giqafofe/1/quiet?JS_POSTER_CIRCLE',
       # Why: JS invalidation does lots of uploads """
       'http://jsbin.com/beqojupo/1/quiet?JS_FULL_SCREEN_INVALIDATION',
     ]
 
     for url in scroll_urls_list:
       self.AddPage(ToughCompositorScrollPage(url, self))
 
     for url in wait_urls_list:
       self.AddPage(ToughCompositorWaitPage(url, self))