Revert of GetAccountIdFromProfile() should not return an empty account id if a valid profile is provided.

chrome/chrome_tests_unit.gypi

 # Copyright 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.
 {
   'variables': {
     'chrome_unit_tests_sources': [
       # histograms.xml is analyzed by AboutFlagsHistogramTest, so this
       # dependency is needed to make commit bots run unit_tests on
       # histograms.xml changes.
       '../tools/metrics/histograms/histograms.xml',
@@ skipping 690 matching lines @@
       'browser/signin/signin_error_notifier_ash_unittest.cc',
       'browser/sync/sync_error_notifier_ash_unittest.cc',
       # Ash implies the app list is enabled (only disabled on mobile).
       'browser/ui/ash/accessibility/ax_tree_source_aura_unittest.cc',
       'browser/ui/ash/chrome_screenshot_grabber_unittest.cc',
       'browser/ui/ash/launcher/chrome_launcher_controller_unittest.cc',
       'browser/ui/ash/launcher/launcher_application_menu_item_model_unittest.cc',
       'browser/ui/ash/launcher/launcher_context_menu_unittest.cc',
       'browser/ui/ash/multi_user/multi_user_context_menu_chromeos_unittest.cc',
       'browser/ui/ash/multi_user/multi_user_notification_blocker_chromeos_unittest.cc',
-      'browser/ui/ash/multi_user/multi_user_util_chromeos_unittest.cc',
       'browser/ui/ash/multi_user/multi_user_window_manager_chromeos_unittest.cc',
       'browser/ui/ash/session_state_delegate_chromeos_unittest.cc',
       'browser/ui/ash/window_positioner_unittest.cc',
       'browser/ui/window_sizer/window_sizer_ash_unittest.cc',
     ],
     'chrome_test_support_unit_ash_sources': [
       'browser/ui/ash/launcher/test/launcher_application_menu_item_model_test_api.cc',
       'browser/ui/ash/launcher/test/launcher_application_menu_item_model_test_api.h',
       'browser/ui/ash/launcher/test/test_chrome_launcher_app_menu_item.cc',
       'browser/ui/ash/launcher/test/test_chrome_launcher_app_menu_item.h',
@@ skipping 2268 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }