Allow signin to continue even if sync is disabled by policy.

chrome/browser/app_controller_mac.mm

 // 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 "chrome/browser/app_controller_mac.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
@@ skipping 760 matching lines @@
           // http://code.google.com/p/chromium/issues/detail?id=43048 .
           //
           // TODO(akalin,viettrungluu): Figure out whether this method
           // can be prevented from being called if lastProfile is
           // NULL.
           if (!lastProfile) {
             LOG(WARNING)
                 << "NULL lastProfile detected -- not doing anything";
             break;
           }
-          enable = lastProfile->IsSyncAccessible() &&
-              ![self keyWindowIsModal];
+          enable = ![self keyWindowIsModal];
           [BrowserWindowController updateSigninItem:item
                                          shouldShow:enable
                                      currentProfile:lastProfile];
           break;
         }
         case IDC_FEEDBACK:
           enable = NO;
           break;
         default:
           enable = menuState_->IsCommandEnabled(tag) ?
@@ skipping 118 matching lines @@
         chrome::OpenExtensionsWindow(lastProfile);
       break;
     case IDC_HELP_PAGE_VIA_MENU:
       if (Browser* browser = ActivateBrowser(lastProfile))
         chrome::ShowHelp(browser, chrome::HELP_SOURCE_MENU);
       else
         chrome::OpenHelpWindow(lastProfile, chrome::HELP_SOURCE_MENU);
       break;
     case IDC_SHOW_SYNC_SETUP:
       if (Browser* browser = ActivateBrowser(lastProfile))
-        chrome::ShowSyncSetup(browser, SyncPromoUI::SOURCE_MENU);
+        chrome::ShowBrowserSignin(browser, SyncPromoUI::SOURCE_MENU);
       else
         chrome::OpenSyncSetupWindow(lastProfile, SyncPromoUI::SOURCE_MENU);
       break;
     case IDC_TASK_MANAGER:
       content::RecordAction(UserMetricsAction("TaskManager"));
       TaskManagerMac::Show(false);
       break;
     case IDC_OPTIONS:
       [self showPreferences:sender];
       break;
@@ skipping 418 matching lines @@
 
 //---------------------------------------------------------------------------
 
 namespace app_controller_mac {
 
 bool IsOpeningNewWindow() {
   return g_is_opening_new_window;
 }
 
 }  // namespace app_controller_mac