Remove href_change and navigate from wait action

tools/telemetry/telemetry/page/actions/gesture_action_unittest.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.
 
 import time
 
 from telemetry.page.actions import gesture_action
 from telemetry.unittest import tab_test_case
 
 class MockGestureAction(gesture_action.GestureAction):
   """Mock gesture action that simply sleeps for a specified amount of time."""
   def __init__(self, attributes=None):
     super(MockGestureAction, self).__init__(attributes)
     self._SetTimelineMarkerBaseName('MockGestureAction::RunAction')
 
-  def RunGesture(self, page, tab, previous_action):
+  def RunGesture(self, page, tab):
     duration = getattr(self, 'duration', 2)
 
     time.sleep(duration)
 
 
 class GestureActionTest(tab_test_case.TabTestCase):
   def testGestureAction(self):
     """Test that GestureAction.RunAction() calls RunGesture()."""
     action = MockGestureAction({ 'duration': 1 })
 
     start_time = time.time()
-    action.RunAction(None, self._tab, None)
+    action.RunAction(None, self._tab)
     self.assertGreaterEqual(time.time() - start_time, 1.0)
 
   def testWaitAfter(self):
     action = MockGestureAction({ 'duration': 1,
                                  'wait_after': { 'seconds': 1 } })
 
     start_time = time.time()
-    action.RunAction(None, self._tab, None)
+    action.RunAction(None, self._tab)
     self.assertGreaterEqual(time.time() - start_time, 2.0)