Pulling user experiment code from BrowserDistribution to a new class.

chrome/installer/util/chrome_app_host_operations.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_CHROME_APP_HOST_OPERATIONS_H_
 #define CHROME_INSTALLER_UTIL_CHROME_APP_HOST_OPERATIONS_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "chrome/installer/util/product_operations.h"
@@ skipping 33 matching lines @@
                                ChannelInfo* channel_info) const OVERRIDE;
 
   virtual bool ShouldCreateUninstallEntry(
       const std::set<std::wstring>& options) const OVERRIDE;
 
   virtual void AddDefaultShortcutProperties(
       BrowserDistribution* dist,
       const base::FilePath& target_exe,
       ShellUtil::ShortcutProperties* properties) const OVERRIDE;
 
+  virtual void LaunchUserExperiment(const base::FilePath& setup_path,
+                                    const std::set<std::wstring>& options,
+                                    BrowserDistribution* dist,
+                                    InstallStatus status,
+                                    bool system_level) const OVERRIDE;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(ChromeAppHostOperations);
 };
 
 }  // namespace installer
 
 #endif  // CHROME_INSTALLER_UTIL_CHROME_APP_HOST_OPERATIONS_H_