Add Wait* API to ActionRunner to wrap over WaitAction.

tools/perf/page_sets/plus_alt_posts_photos.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 PlusAltPostsPhotosPage(page_module.Page):
 
   """ Why: Alternate between clicking posts and albums """
 
   def __init__(self, page_set):
     super(PlusAltPostsPhotosPage, self).__init__(
       url='https://plus.google.com/+BarackObama/posts',
       page_set=page_set,
       name='plus_alt_posts_photos')
     self.credentials_path = 'data/credentials.json'
     self.credentials = 'google'
     self.user_agent_type = 'desktop'
     self.archive_data_file = 'data/plus_alt_posts_photos.json'
 
   def RunNavigateSteps(self, action_runner):
     action_runner.NavigateToPage(self)
-    action_runner.RunAction(WaitAction(
-      {
-        'text': 'Barack Obama',
-        'condition': 'element'
-      }))
-    action_runner.RunAction(WaitAction(
-      {
-        'condition': 'element',
-        'selector': 'span[guidedhelpid="posts_tab_profile"][class*="s6U8x"]'
-      }))
+    action_runner.WaitForElement(text='Barack Obama')
+    action_runner.WaitForElement(
+        'span[guidedhelpid="posts_tab_profile"][class*="s6U8x"]')
 
   def RunEndure(self, action_runner):
     action_runner.RunAction(ClickElementAction(
       {
         'selector': 'span[guidedhelpid="posts_tab_profile"]'
       }))
-    action_runner.RunAction(WaitAction(
-      {
-        'condition': 'element',
-        'selector': 'span[guidedhelpid="posts_tab_profile"][class*="s6U8x"]'
-      }))
-    action_runner.RunAction(WaitAction(
-      {
-        'seconds': 5
-      }))
+    action_runner.WaitForElement(
+        'span[guidedhelpid="posts_tab_profile"][class*="s6U8x"]')
+    action_runner.Wait(5)
     action_runner.RunAction(ClickElementAction(
       {
         'selector': 'span[guidedhelpid="photos_tab_profile"]'
       }))
-    action_runner.RunAction(WaitAction(
-      {
-        'condition': 'element',
-        'selector': 'span[guidedhelpid="photos_tab_profile"][class*="s6U8x"]'
-      }))
-    action_runner.RunAction(WaitAction(
-      {
-        'seconds': 5
-      }))
+    action_runner.WaitForElement(
+        'span[guidedhelpid="photos_tab_profile"][class*="s6U8x"]')
+    action_runner.Wait(5)
 
 
 class PlusAltPostsPhotosPageSet(page_set_module.PageSet):
 
   """ Chrome Endure test for Google Plus. """
 
   def __init__(self):
     super(PlusAltPostsPhotosPageSet, self).__init__(
       credentials_path='data/credentials.json',
       user_agent_type='desktop',
       archive_data_file='data/plus_alt_posts_photos.json')
 
     self.AddPage(PlusAltPostsPhotosPage(self))