[Telemetry] Cleanup some unused variables in page_sets.

tools/perf/page_sets/google_pages.py

 # Copyright 2015 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.login_helpers import google_login
 
 from telemetry.page import page as page_module
 from telemetry.page import shared_page_state
 
 import os
 
 def _DeterministicPerformanceCounters():
   with open(os.path.join(os.path.dirname(__file__),
           'deterministic_performance_counters.js')) as f:
     return f.read()
 
 class GooglePages(page_module.Page):
   def __init__(self, url, page_set, shared_page_state_class,
                name='', credentials=None):
     super(GooglePages, self).__init__(
         url=url, page_set=page_set, name=name,
         credentials_path='data/credentials.json',
         shared_page_state_class=shared_page_state_class)
-    self.archive_data_file = 'data/google_pages.json'
     self.credentials = credentials
     self.script_to_evaluate_on_commit = _DeterministicPerformanceCounters()
 
 
 class GmailPage(GooglePages):
   def __init__(self, page_set,
                shared_page_state_class=shared_page_state.SharedPageState):
     super(GmailPage, self).__init__(
         url='https://mail.google.com/mail/',
         page_set=page_set,
@@ skipping 16 matching lines @@
         page_set=page_set,
         shared_page_state_class=shared_page_state_class)
 
   def RunNavigateSteps(self, action_runner):
     google_login.LoginGoogleAccount(action_runner, 'google',
                                     self.credentials_path)
     super(GoogleDocPage, self).RunNavigateSteps(action_runner)
     action_runner.Wait(2)
     action_runner.WaitForJavaScriptCondition(
         'document.getElementsByClassName("kix-appview-editor").length')