[Telemetry] Reorganize everything.

tools/telemetry/telemetry/core/chrome/form_based_credentials_backend.py

 # 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 telemetry
-from telemetry import util
+from telemetry.core import util
 
 
 def _WaitForLoginFormToLoad(backend, login_form_id, tab):
   def IsFormLoadedOrAlreadyLoggedIn():
     return tab.EvaluateJavaScript(
         'document.querySelector("#%s")!== null' % login_form_id) or \
             backend.IsAlreadyLoggedIn(tab)
 
   # Wait until the form is submitted and the page completes loading.
   util.WaitFor(lambda: IsFormLoadedOrAlreadyLoggedIn(), # pylint: disable=W0108
@@ skipping 78 matching lines @@
           self.login_form_id, self.login_input_id, config['username'])
       password = 'document.querySelector("#%s").%s.value = "%s"; ' % (
           self.login_form_id, self.password_input_id, config['password'])
       tab.ExecuteJavaScript(email_id)
       tab.ExecuteJavaScript(password)
 
       _SubmitFormAndWait(self.login_form_id, tab)
 
       self._logged_in = True
       return True
-    except telemetry.TimeoutException:
+    except util.TimeoutException:
       logging.warning('Timed out while loading: %s', self.url)
       return False
 
   def LoginNoLongerNeeded(self, tab): # pylint: disable=W0613
     assert self._logged_in