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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// This file contains helper functions used by setup.
+
+#ifndef CHROME_INSTALLER_UTIL_HELPER_H__
+#define CHROME_INSTALLER_UTIL_HELPER_H__
+
+#include <string>
+
+namespace installer {
+
+// This function returns the install path for Chrome depending on whether its
+// system wide install or user specific install.
+// system_install: if true, the function returns system wide location
+//                 (ProgramFiles\Google). Otherwise it returns user specific
+//                 location (Document And Settings\<user>\Local Settings...)
+std::wstring GetChromeInstallPath(bool system_install);
+
+// Launches Chrome without waiting for its exit.
+bool LaunchChrome(bool system_install);
+
+// Launches Chrome with given command line, waits for Chrome to terminate
+// within timeout_ms, and gets the process exit code if available.
+// The function returns true as long as Chrome is successfully launched.
+// The status of Chrome at the return of the function is given by exit_code
+// and is_timeout.
+bool LaunchChromeAndWaitForResult(bool system_install,
+                                  const std::wstring& options,
+                                  int32 timeout_ms,
+                                  int32* exit_code,
+                                  bool* is_timeout);
+
+// This function tries to remove all previous version directories after a new
+// Chrome update. If an instance of Chrome with older version is still running
+// on the system, its corresponding version directory will be left intact.
+// (The version directory is subject for removal again during next update.)
+//
+// chrome_path: the root path of Chrome installation.
+// latest_version_str: the latest version of Chrome installed.
+void RemoveOldVersionDirs(const std::wstring& chrome_path,
+                          const std::wstring& latest_version_str);
+
+}  // namespace installer
+
+#endif