[tools/perf] Rename mobile_facebook_login to facebook_login

tools/perf/page_sets/mobile_facebook_page.py

Index: tools/perf/page_sets/mobile_facebook_page.py
diff --git a/tools/perf/page_sets/mobile_facebook_page.py b/tools/perf/page_sets/mobile_facebook_page.py
index edd93a04a138b290cfa677b38c26d03e27fb9172..0dc1438e6d2be813acd798508cc62877f3dac02e 100644
--- a/tools/perf/page_sets/mobile_facebook_page.py
+++ b/tools/perf/page_sets/mobile_facebook_page.py
@@ -2,10 +2,11 @@
 # 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 mobile_facebook_login
+from page_sets.login_helpers import facebook_login
 
 from telemetry.page import page as page_module
 
+
 class MobileFacebookPage(page_module.Page):
   def __init__(self, url, page_set, shared_page_state_class, name='facebook'):
     super(MobileFacebookPage, self).__init__(
@@ -13,6 +14,6 @@ class MobileFacebookPage(page_module.Page):
         credentials_path='data/credentials.json',
         shared_page_state_class=shared_page_state_class)
   def RunNavigateSteps(self, action_runner):
-    mobile_facebook_login.LoginAccount(action_runner, 'facebook3',
+    facebook_login.LoginWithMobileSite(action_runner, 'facebook3',
                                        self.credentials_path)
     super(MobileFacebookPage, self).RunNavigateSteps(action_runner)