Revert "Fix a ton of compiler warnings."

chrome/browser/browsing_data_remover.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2008 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_BROWSING_DATA_REMOVER_H_
 #define CHROME_BROWSER_BROWSING_DATA_REMOVER_H_
 
 #include "base/observer_list.h"
 #include "base/time.h"
 #include "chrome/browser/cancelable_request.h"
 #include "chrome/common/notification_registrar.h"
@@ skipping 22 matching lines @@
   static const int REMOVE_COOKIES = 1 << 2;
   static const int REMOVE_PASSWORDS = 1 << 3;
   static const int REMOVE_FORM_DATA = 1 << 4;
   static const int REMOVE_CACHE = 1 << 5;
 
   // Observer is notified when the removal is done. Done means keywords have
   // been deleted, cache cleared and all other tasks scheduled.
   class Observer {
    public:
     virtual void OnBrowsingDataRemoverDone() = 0;
-   protected:
-    ~Observer() {}
   };
 
   // Creates a BrowsingDataRemover to remove browser data from the specified
   // profile in the specified time range. Use Remove to initiate the removal.
   BrowsingDataRemover(Profile* profile, base::Time delete_begin,
                       base::Time delete_end);
 
   // Creates a BrowsingDataRemover to remove browser data from the specified
   // profile in the specified time range.
   BrowsingDataRemover(Profile* profile, TimePeriod time_period,
@@ skipping 62 matching lines @@
 
   ObserverList<Observer> observer_list_;
 
   // Used if we need to clear history.
   CancelableRequestConsumer request_consumer_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowsingDataRemover);
 };
 
 #endif  // CHROME_BROWSER_BROWSING_DATA_REMOVER_H_