Move User Manager onto a System profile.

chrome/browser/profiles/profile_manager.h

Index: chrome/browser/profiles/profile_manager.h
diff --git a/chrome/browser/profiles/profile_manager.h b/chrome/browser/profiles/profile_manager.h
index d246aaddf610d624048f2b8d8110e52b9a9bb966..c16b6df8736a59c25eccfc0b8a68ef5fd76339b6 100644
--- a/chrome/browser/profiles/profile_manager.h
+++ b/chrome/browser/profiles/profile_manager.h
@@ -139,6 +139,9 @@ class ProfileManager : public base::NonThreadSafe,
   // Returns the full path to be used for guest profiles.
   static base::FilePath GetGuestProfilePath();
 
+  // Returns the full path to be used for system profiles.
+  static base::FilePath GetSystemProfilePath();
+
   // Get the path of the next profile directory and increment the internal
   // count.
   // Lack of side effects: