Minor cleanups for user experiments (follow-up to Issue 12321061).

chrome/installer/util/user_experiment.h

 // Copyright 2013 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 files declares a class that contains methods and data to conduct
 // for user expeirments.
 
 #ifndef CHROME_INSTALLER_UTIL_USER_EXPERIMENT_H_
 #define CHROME_INSTALLER_UTIL_USER_EXPERIMENT_H_
 
@@ skipping 42 matching lines @@
 // experiment. This function determines if the user qualifies and if so it
 // sets the wheels in motion or in simple cases does the experiment itself.
 void LaunchBrowserUserExperiment(const CommandLine& base_command,
                                  InstallStatus status,
                                  bool system_level);
 
 // The user has qualified for the inactive user toast experiment and this
 // function just performs it.
 void InactiveUserToastExperiment(int flavor,
                                  const string16& experiment_group,
-                                 const Product& installation,
+                                 const Product& product,
                                  const base::FilePath& application_path);
 
 }  // namespace installer
 
 #endif  // CHROME_INSTALLER_UTIL_USER_EXPERIMENT_H_