Revert "Fix a ton of compiler warnings."

net/base/directory_lister.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 NET_BASE_DIRECTORY_LISTER_H_
-#define NET_BASE_DIRECTORY_LISTER_H_
+#ifndef NET_BASE_DIRECTORY_LISTER_H__
+#define NET_BASE_DIRECTORY_LISTER_H__
 
 #include <string>
 
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/platform_thread.h"
 #include "base/ref_counted.h"
 
 class MessageLoop;
 
 namespace net {
 
 //
 // This class provides an API for listing the contents of a directory on the
 // filesystem asynchronously.  It spawns a background thread, and enumerates
 // the specified directory on that thread.  It marshalls WIN32_FIND_DATA
 // structs over to the main application thread.  The consumer of this class
 // is insulated from any of the multi-threading details.
 //
 class DirectoryLister : public base::RefCountedThreadSafe<DirectoryLister>,
                         public PlatformThread::Delegate {
  public:
   // Implement this class to receive directory entries.
   class DirectoryListerDelegate {
    public:
     virtual void OnListFile(
         const file_util::FileEnumerator::FindInfo& data) = 0;
     virtual void OnListDone(int error) = 0;
-
-   protected:
-    ~DirectoryListerDelegate() {}
   };
 
   DirectoryLister(const FilePath& dir, DirectoryListerDelegate* delegate);
   ~DirectoryLister();
 
   // Call this method to start the directory enumeration thread.
   bool Start();
 
   // Call this method to asynchronously stop directory enumeration.  The
   // delegate will receive the OnListDone notification with an error code of
@@ skipping 16 matching lines @@
 
   FilePath dir_;
   DirectoryListerDelegate* delegate_;
   MessageLoop* message_loop_;
   PlatformThreadHandle thread_;
   bool canceled_;
 };
 
 }  // namespace net
 
-#endif  // NET_BASE_DIRECTORY_LISTER_H_
+#endif  // NET_BASE_DIRECTORY_LISTER_H__