Callback flow to register Chrome and update shortcuts after OS upgrade to Windows 8

chrome/installer/setup/install.cc

 // 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.
 
 #include "chrome/installer/setup/install.h"
 
 #include <shlobj.h>
 #include <time.h>
 #include <winuser.h>
 
@@ skipping 534 matching lines @@
 
     installer_state.RemoveOldVersionDirectories(
         new_version,
         existing_version.get(),
         install_temp_path);
   }
 
   return result;
 }
 
+void HandleOsUpgradeForBrowser(const InstallerState& installer_state,
+                               const Product& chrome,
+                               const FilePath& setup_exe) {
+  DCHECK(chrome.is_chrome());
+  // Upon upgrading to Windows 8, we need to fix Chrome shortcuts and register
+  // Chrome, so that Metro Chrome would work if Chrome is the default browser.
+  if (base::win::GetVersion() >= base::win::VERSION_WIN8) {
+    VLOG(1) << "Updating and registering shortcuts.";
+    uint32 shortcut_options = ShellUtil::SHORTCUT_DUAL_MODE;
+    CreateOrUpdateDesktopAndQuickLaunchShortcuts(
+        installer_state, chrome, shortcut_options);
+    CreateOrUpdateStartMenuAndTaskbarShortcuts(
+        installer_state, setup_exe, chrome, shortcut_options);
+    RegisterChromeOnMachine(installer_state, chrome, false);
+  }
+}
+
 }  // namespace installer