Add NavigateToPage API for action_runner.

tools/telemetry/telemetry/page/actions/play.py

Index: tools/telemetry/telemetry/page/actions/play.py
diff --git a/tools/telemetry/telemetry/page/actions/play.py b/tools/telemetry/telemetry/page/actions/play.py
index bb32b583020c267321cee63a3d8410bc9623656c..c81c4336da49db81db5d3904d1947b55a2b47522 100644
--- a/tools/telemetry/telemetry/page/actions/play.py
+++ b/tools/telemetry/telemetry/page/actions/play.py
@@ -21,12 +21,12 @@ class PlayAction(media_action.MediaAction):
   def __init__(self, attributes=None):
     super(PlayAction, self).__init__(attributes)
 
-  def WillRunAction(self, page, tab):
+  def WillRunAction(self, tab):
     """Load the media metrics JS code prior to running the action."""
-    super(PlayAction, self).WillRunAction(page, tab)
+    super(PlayAction, self).WillRunAction(tab)
     self.LoadJS(tab, 'play.js')
 
-  def RunAction(self, page, tab):
+  def RunAction(self, tab):
     try:
       selector = self.selector if hasattr(self, 'selector') else ''
       tab.ExecuteJavaScript('window.__playMedia("%s");' % selector)