Add PolicyProvider to ExtensionManagement

extensions/browser/extension_prefs.h

 // Copyright 2014 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 EXTENSIONS_BROWSER_EXTENSION_PREFS_H_
 #define EXTENSIONS_BROWSER_EXTENSION_PREFS_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 329 matching lines @@
                                                 bool value);
 
   // Returns true if the extension notification code has already run for the
   // first time for this profile. Currently we use this flag to mean that any
   // extensions that would trigger notifications should get silently
   // acknowledged. This is a fuse. Calling it the first time returns false.
   // Subsequent calls return true. It's not possible through an API to ever
   // reset it. Don't call it unless you mean it!
   bool SetAlertSystemFirstRun();
 
-  // Checks if extensions are blacklisted by default, by policy.
-  // The ManagementPolicy::Provider methods also take this into account, and
-  // should be used instead when the extension ID is known.
-  bool ExtensionsBlacklistedByDefault() const;
-
   // Returns the last value set via SetLastPingDay. If there isn't such a
   // pref, the returned Time will return true for is_null().
   base::Time LastPingDay(const std::string& extension_id) const;
 
   // The time stored is based on the server's perspective of day start time, not
   // the client's.
   void SetLastPingDay(const std::string& extension_id, const base::Time& time);
 
   // Similar to the 2 above, but for the extensions blacklist.
   base::Time BlacklistLastPingDay() const;
@@ skipping 352 matching lines @@
   bool extensions_disabled_;
 
   ObserverList<ExtensionPrefsObserver> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionPrefs);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_EXTENSION_PREFS_H_