Ensuring Google Update at user-level is installed alongside App Host, for the quick-enable App Host…

chrome/installer/util/google_update_util.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.
+
+#ifndef CHROME_INSTALLER_UTIL_GOOGLE_UPDATE_UTIL_H_
+#define CHROME_INSTALLER_UTIL_GOOGLE_UPDATE_UTIL_H_
+
+namespace google_update {
+
+// If user-level Google Update is not installed, calls the system-level
+// GoogleUpdateSetup.exe to install it (and waits for it to finish).
+// Returns true if already installed or installed successfully, and false if the
+// installation fails or times-out.
+bool EnsureUserLevelGoogleUpdateInstalled();
+
+// Tell Google Update that an uninstall has taken place.  This gives it a chance
+// to uninstall itself straight away if no more products are installed on the
+// system rather than waiting for the next time the scheduled task runs.
+// Return true if and only if this executes successfully.

[grt (UTC plus 2), 2012/09/21 14:20:33]

"Returns false if Google Update could not be executed." since successful
execution isn't well-defined.  does it mean that Google Update was uninstalled,
or just that it was run?

[huangs, 2012/09/21 18:48:43]

Done.

+bool UninstallGoogleUpdate(bool system_install);
+
+}  // namespace google_update
+
+#endif  // CHROME_INSTALLER_UTIL_GOOGLE_UPDATE_UTIL_H_