Support variations_seed parameter in MasterPrefs.

chrome/browser/first_run/first_run.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_BROWSER_FIRST_RUN_FIRST_RUN_H_
 #define CHROME_BROWSER_FIRST_RUN_FIRST_RUN_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 53 matching lines @@
   ~MasterPrefs();
 
   int ping_delay;
   bool homepage_defined;
   int do_import_items;
   int dont_import_items;
   bool make_chrome_default;
   bool suppress_first_run_default_browser_prompt;
   std::vector<GURL> new_tabs;
   std::vector<GURL> bookmarks;
+  std::string variations_seed;
 };
 
 // Returns true if this is the first time chrome is run for this user.
 bool IsChromeFirstRun();
 
 // Creates the sentinel file that signals that chrome has been configured.
 bool CreateSentinel();
 
 // Get RLZ ping delay pref name.
 std::string GetPingDelayPrefName();
@@ skipping 92 matching lines @@
                        const content::NotificationDetails& details) OVERRIDE;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(FirstRunBubbleLauncher);
 };
 
 }  // namespace first_run
 
 #endif  // CHROME_BROWSER_FIRST_RUN_FIRST_RUN_H_