Allow defining custom navigation on a per-page basis.

tools/telemetry/telemetry/page/record_wpr.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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 logging
 import os
 import sys
 import tempfile
 import time
 
@@ skipping 29 matching lines @@
   def Run(self, options, page, tab, results):
     # When recording, sleep to catch any resources that load post-onload.
     tab.WaitForDocumentReadyStateToBeComplete()
     time.sleep(3)
 
     # Run the actions for all measurements. Reload the page between
     # actions.
     should_reload = False
     for compound_action in self._CompoundActionsForPage(page):
       if should_reload:
-        tab.Navigate(page.url)
-        tab.WaitForDocumentReadyStateToBeComplete()
+        self.RunNavigateSteps(page, tab)
       self._RunCompoundAction(page, tab, compound_action)
       should_reload = True
 
   def _CompoundActionsForPage(self, page):
     actions = []
     for action_name in self._action_names:
       if not hasattr(page, action_name):
         continue
       actions.append(page_test.GetCompoundActionFromPage(page, action_name))
     return actions
@@ skipping 51 matching lines @@
                     'updated for these pages.')
     logging.warning('Skipped pages:\n%s', '\n'.join(zip(*results.skipped)[0]))
 
   if results.successes:
     # Update the metadata for the pages which were recorded.
     ps.wpr_archive_info.AddRecordedPages(results.successes)
   else:
     os.remove(temp_target_wpr_file_path)
 
   return min(255, len(results.failures))