Add Wait* API to ActionRunner to wrap over WaitAction.

tools/perf/page_sets/top_10.py

Index: tools/perf/page_sets/top_10.py
diff --git a/tools/perf/page_sets/top_10.py b/tools/perf/page_sets/top_10.py
index ed5f9b92da8cd582e2230d3489ffacd82cde07c3..2ec8247651d9621294ed4e2d063f542ddc64cda7 100644
--- a/tools/perf/page_sets/top_10.py
+++ b/tools/perf/page_sets/top_10.py
@@ -22,8 +22,7 @@ class Google(SimpleScrollPage):
 
   def RunNavigateSteps(self, action_runner):
     super(Google, self).RunNavigateSteps(action_runner)
-    action_runner.RunAction(WaitAction(
-      {'condition': 'element', 'text': 'Next'}))
+    action_runner.WaitForElement(text='Next')
 
 
 class Gmail(SimpleScrollPage):
@@ -35,9 +34,9 @@ class Gmail(SimpleScrollPage):
 
   def RunNavigateSteps(self, action_runner):
     super(Gmail, self).RunNavigateSteps(action_runner)
-    action_runner.RunAction(WaitAction(
-      {'javascript' : 'window.gmonkey !== undefined &&'
-       'document.getElementById("gb") !== null'}))
+    action_runner.WaitForJavaScriptCondition(
+        'window.gmonkey !== undefined &&'
+        'document.getElementById("gb") !== null')
 
 
 class GoogleCalendar(SimpleScrollPage):
@@ -55,9 +54,8 @@ class GoogleCalendar(SimpleScrollPage):
           elem.content="initial-scale=1";
           document.body.appendChild(elem);
         })();''')
-    action_runner.RunAction(WaitAction({'seconds' : 2}))
-    action_runner.RunAction(WaitAction({
-      'condition' : 'element', 'selector' : 'div[class~="navForward"]'}))
+    action_runner.Wait(2)
+    action_runner.WaitForElement('div[class~="navForward"]')
 
 
 class Youtube(SimpleScrollPage):
@@ -69,7 +67,7 @@ class Youtube(SimpleScrollPage):
 
   def RunNavigateSteps(self, action_runner):
     super(Youtube, self).RunNavigateSteps(action_runner)
-    action_runner.RunAction(WaitAction({'seconds' : 2}))
+    action_runner.Wait(2)
 
 
 class Facebook(SimpleScrollPage):
@@ -82,8 +80,7 @@ class Facebook(SimpleScrollPage):
 
   def RunNavigateSteps(self, action_runner):
     super(Facebook, self).RunNavigateSteps(action_runner)
-    action_runner.RunAction(WaitAction(
-      {'condition': 'element', 'text': 'About'}))
+    action_runner.WaitForElement(text='About')
 
 
 class Top10PageSet(page_set_module.PageSet):