Missed an invocation of _CryptohomePath.

tools/telemetry/telemetry/core/backends/chrome/cros_browser_backend.py

 # Copyright 2013 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
 
 from telemetry import decorators
 
 from telemetry.core import exceptions
@@ skipping 362 matching lines @@
           if (guest) {
             guest.click();
           }
       """)
     except (exceptions.TabCrashException,
             exceptions.BrowserConnectionGoneException):
       pass
 
   def _WaitForGuestFsMounted(self):
     """Waits for the guest user to be mounted as guestfs"""
-    guest_path = self._CryptohomePath('$guest')
+    guest_path = self._cri.CryptohomePath('$guest')
     util.WaitFor(lambda: (self._cri.FilesystemMountedAt(guest_path) ==
                           'guestfs'), 20)
 
   def _NavigateGuestLogin(self):
     """Navigates through oobe login screen as guest"""
     if not self.oobe_exists:
       raise exceptions.LoginException('Oobe missing')
     self._WaitForSigninScreen()
     self._ClickBrowseAsGuest()
     self._WaitForGuestFsMounted()
@@ skipping 43 matching lines @@
           tab = self.tab_list_backend.New(timeout=30)
           tab.Navigate('about:blank', timeout=10)
         except (exceptions.TabCrashException, util.TimeoutException,
                 IndexError):
           retries -= 1
           logging.warn('TabCrashException/TimeoutException in '
                        'new tab creation/navigation, '
                        'remaining retries %d' % retries)
           if not retries:
             raise