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

chrome/installer/setup/setup_main.cc

Index: chrome/installer/setup/setup_main.cc
diff --git a/chrome/installer/setup/setup_main.cc b/chrome/installer/setup/setup_main.cc
index 139b8274e9eb5c81aba8e38593fc0d1b12a05436..b21df3e0ceded366d5f5d211772a59c1c346b049 100644
--- a/chrome/installer/setup/setup_main.cc
+++ b/chrome/installer/setup/setup_main.cc
@@ -1226,6 +1226,9 @@ bool HandleNonInstallCmdLineOptions(const InstallationState& original_state,
   } else if (cmd_line.HasSwitch(installer::switches::kChromeFrameQuickEnable)) {
     *exit_code = installer::ChromeFrameQuickEnable(original_state,
                                                    installer_state);
+  } else if (cmd_line.HasSwitch(installer::switches::kOnOsUpgrade)) {
+    *exit_code = InstallUtil::GetInstallReturnCode(
+        installer::OnOsUpgrade(original_state, *installer_state, cmd_line));
   } else {
     handled = false;
   }