Always re-layout the app menu to get sync system state....

chrome/browser/views/toolbar_view.cc

 // Copyright (c) 2009 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.
 
 #include "chrome/browser/views/toolbar_view.h"
 
 #include <string>
 
 #include "app/drag_drop_types.h"
 #include "app/gfx/canvas.h"
@@ skipping 1074 matching lines @@
   if (g_browser_process->have_inspector_files()) {
     devtools_menu_contents_->AddItem(IDC_DEV_TOOLS,
                                      l10n_util::GetString(IDS_DEV_TOOLS));
   }
   devtools_menu_contents_->AddItem(IDC_TASK_MANAGER,
                                    l10n_util::GetString(IDS_TASK_MANAGER));
 }
 #endif
 
 void ToolbarView::CreateAppMenu() {
-  if (app_menu_contents_.get())
-    return;
+  // We always rebuild the app menu so that we can get the current state of
+  // the sync system.
 
   app_menu_contents_.reset(new views::SimpleMenuModel(this));
   app_menu_contents_->AddItemWithStringId(IDC_NEW_TAB, IDS_NEW_TAB);
   app_menu_contents_->AddItemWithStringId(IDC_NEW_WINDOW, IDS_NEW_WINDOW);
   app_menu_contents_->AddItemWithStringId(IDC_NEW_INCOGNITO_WINDOW,
                                           IDS_NEW_INCOGNITO_WINDOW);
   // Enumerate profiles asynchronously and then create the parent menu item.
   // We will create the child menu items for this once the asynchronous call is
   // done.  See OnGetProfilesDone().
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
@@ skipping 49 matching lines @@
   app_menu_contents_->AddItem(IDC_ABOUT,
                               l10n_util::GetStringFUTF16(
                                   IDS_ABOUT,
                                   l10n_util::GetStringUTF16(IDS_PRODUCT_NAME)));
   app_menu_contents_->AddItemWithStringId(IDC_HELP_PAGE, IDS_HELP_PAGE);
   app_menu_contents_->AddSeparator();
   app_menu_contents_->AddItemWithStringId(IDC_EXIT, IDS_EXIT);
 
   app_menu_menu_.reset(new views::Menu2(app_menu_contents_.get()));
 }