Mark supervised profiles as such immediately when they're created.

chrome/browser/profiles/profile.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.
 
 // This class gathers state related to a single user profile.
 
 #ifndef CHROME_BROWSER_PROFILES_PROFILE_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_H_
 
 #include <string>
@@ skipping 116 matching lines @@
     // The exit was the result of the system shutting down.
     EXIT_SESSION_ENDED,
 
     EXIT_CRASHED,
   };
 
   class Delegate {
    public:
     virtual ~Delegate();
 
+    // Called when preferences for the profile have been loaded, but before all
+    // the profile services have been initialized.
+    virtual void OnPrefsLoaded(Profile* profile) = 0;
+
     // Called when creation of the profile is finished.
     virtual void OnProfileCreated(Profile* profile,
                                   bool success,
                                   bool is_new_profile) = 0;
   };
 
   // Key used to bind profile to the widget with which it is associated.
   static const char kProfileKey[];
 
   Profile();
@@ skipping 260 matching lines @@
 struct hash<Profile*> {
   std::size_t operator()(Profile* const& p) const {
     return reinterpret_cast<std::size_t>(p);
   }
 };
 
 }  // namespace BASE_HASH_NAMESPACE
 #endif
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_H_