[tools/perf] Refactor NavigateBack implementation to use action_runner.NavigateBack

tools/perf/page_sets/system_health/browsing_stories.py

 # Copyright 2016 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.
 
 from page_sets.system_health import platforms
 from page_sets.system_health import system_health_story
 
 from page_sets.login_helpers import pinterest_login
 
 from telemetry import decorators
@@ skipping 22 matching lines @@
     action_runner.WaitForElement(element_function=item_selector)
     action_runner.ScrollPageToElement(element_function=item_selector)
     self._ClickLink(action_runner, item_selector)
 
   def _ClickLink(self, action_runner, element_function):
     action_runner.WaitForElement(element_function=element_function)
     action_runner.ClickElement(element_function=element_function)
     self._WaitForNavigation(action_runner)
 
   def _NavigateBack(self, action_runner):
-    action_runner.ExecuteJavaScript('window.history.back()')
+    action_runner.NavigateBack()
     self._WaitForNavigation(action_runner)
 
 
 ##############################################################################
 # News browsing stories.
 ##############################################################################
 
 
 class _NewsBrowsingStory(_BrowsingStory):
   """Abstract base class for news user stories.
@@ skipping 316 matching lines @@
       inner_save_function = 'document.querySelector(".nameAndIcons")'
       action_runner.WaitForElement(element_function=inner_save_function)
       action_runner.ClickElement(element_function=inner_save_function)
       action_runner.Wait(1)  # Wait to make navigation realistic.
 
     # Close selection.
     x_element_function = ('document.querySelector('
                           '".Button.borderless.close.visible")')
     action_runner.ClickElement(element_function=x_element_function)
     action_runner.Wait(1)  # Wait to make navigation realistic.