[tools/perf] Rename mobile_facebook_login to facebook_login

tools/perf/page_sets/login_helpers/mobile_facebook_login.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 login_utils
-
-
-def LoginAccount(
-    action_runner, credential,
-    credentials_path=login_utils.DEFAULT_CREDENTIAL_PATH):
-  """Logs in into mobile Facebook account.
-
-  This function navigates the tab into Facebook's login page and logs in a user
-  using credentials in |credential| part of the |credentials_path| file.
-
-  Args:
-    action_runner: Action runner responsible for running actions on the page.
-    credential: The credential to retrieve from the credentials file
-        (type string).
-    credentials_path: The string that specifies the path to credential file.
-
-  Raises:
-    exceptions.Error: See ExecuteJavaScript()
-    for a detailed list of possible exceptions.
-  """
-  account_name, password = login_utils.GetAccountNameAndPassword(
-      credential, credentials_path=credentials_path)
-
-  action_runner.Navigate(
-       'https://m.facebook.com/login?continue=https%3A%2F%2Fm.facebook.com')
-  login_utils.InputWithSelector(action_runner, account_name, '[name=email]')
-  login_utils.InputWithSelector(action_runner, password, '[name=pass]')
-  action_runner.ClickElement(selector='[name=login]')
-  action_runner.WaitForElement(text='OK')
-  action_runner.ClickElement(text='OK')
-  action_runner.WaitForNavigate()