Keep installing all-users Start Menu and Desktop shortcuts on system-level installs.

chrome/installer/setup/install.h

 // 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.
 //
 // This file contains the specification of setup main functions.
 
 #ifndef CHROME_INSTALLER_SETUP_INSTALL_H_
 #define CHROME_INSTALLER_SETUP_INSTALL_H_
 
 #include <vector>
@@ skipping 23 matching lines @@
   // system-level equivalent of that shortcut is not present on the system.
   INSTALL_SHORTCUT_CREATE_EACH_IF_NO_SYSTEM_LEVEL,
   // Replace all shortcuts that still exist with the most recent version of
   // each individual shortcut.
   INSTALL_SHORTCUT_REPLACE_EXISTING,
 };
 
 enum InstallShortcutLevel {
   // Install shortcuts for the current user only.
   CURRENT_USER,
-  // Install global shortcuts visible to all users. This is no longer used on
-  // install and should only be used to update existing shortcuts on legacy
-  // installs.
+  // Install global shortcuts visible to all users. Note: the Quick Launch
+  // and taskbar pin shortcuts are still installed per-user (as they have no
+  // all-users version).
   ALL_USERS,
 };
 
 // Escape |att_value| as per the XML AttValue production
 // (http://www.w3.org/TR/2008/REC-xml-20081126/#NT-AttValue) for a value in
 // single quotes.
 void EscapeXmlAttributeValueInSingleQuotes(string16* att_value);
 
 // Creates VisualElementsManifest.xml beside chrome.exe in |src_path| if
 // |src_path|\VisualElements exists.
@@ skipping 70 matching lines @@
 // Shortcut creation is skipped if the First Run beacon is present (unless
 // |force| is set to true).
 // |chrome| The installed product (must be a browser).
 void HandleActiveSetupForBrowser(const FilePath& installation_root,
                                  const Product& chrome,
                                  bool force);
 
 }  // namespace installer
 
 #endif  // CHROME_INSTALLER_SETUP_INSTALL_H_