signin: pull basic SigninManager functionality into new SigninManagerBase class.

chrome/chrome_tests.gypi

 # 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.
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 1696 matching lines @@
             'browser/extensions/api/terminal/terminal_private_apitest.cc',
             'test/data/webui/certificate_viewer_dialog_test.js',
             'test/data/webui/certificate_viewer_ui_test-inl.h',
           ],
         }, { # chromeos==1
           'sources!': [
             'browser/extensions/load_and_launch_browsertest.cc',
             'browser/printing/cloud_print/test/cloud_print_policy_browsertest.cc',
             'browser/printing/cloud_print/test/cloud_print_proxy_process_browsertest.cc',
             'browser/service/service_process_control_browsertest.cc',
+            'browser/signin/signin_browsertest.cc',
             # chromeos does not use cross-platform panels
             'browser/ui/panels/panel_extension_browsertest.cc',
           ],
           'dependencies': [
             '../dbus/dbus.gyp:dbus_test_support',
             '../build/linux/system.gyp:dbus',
           ],
         }],
         ['file_manager_extension==0', {
           'sources!': [
@@ skipping 1523 matching lines @@
               # more details.
               'DebugInformationFormat': '3',
               'ProgramDataBaseFileName': '<(PRODUCT_DIR)/browser_tests.exe.pdb',
             },
           },
         },
       ],
     }],
   ],  # 'conditions'
 }