RefCounted types should not have public destructors, chrome/browser/ part 6

chrome/browser/importer/external_process_importer_host.h

 // Copyright (c) 2011 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_IMPORTER_EXTERNAL_PROCESS_IMPORTER_HOST_H_
 #define CHROME_BROWSER_IMPORTER_EXTERNAL_PROCESS_IMPORTER_HOST_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "chrome/browser/importer/importer_host.h"
 
 class ExternalProcessImporterClient;
 class Profile;
 class ProfileWriter;
 
 namespace importer {
 struct SourceProfile;
 }
 
 // This class manages the import process. It creates the in-process half of the
 // importer bridge and the external process importer client.
 class ExternalProcessImporterHost : public ImporterHost {
  public:
   ExternalProcessImporterHost();
 
   // ImporterHost:
   virtual void Cancel() OVERRIDE;
 
+ protected:
+  virtual ~ExternalProcessImporterHost();
+
  private:
   // ImporterHost:
   virtual void StartImportSettings(
       const importer::SourceProfile& source_profile,
       Profile* target_profile,
       uint16 items,
       ProfileWriter* writer,
       bool first_run) OVERRIDE;
   virtual void InvokeTaskIfDone() OVERRIDE;
   virtual void Loaded(BookmarkModel* model, bool ids_reassigned) OVERRIDE;
@@ skipping 11 matching lines @@
   bool cancelled_;
 
   // True if the import process has been launched. This prevents race
   // conditions on import cancel.
   bool import_process_launched_;
 
   DISALLOW_COPY_AND_ASSIGN(ExternalProcessImporterHost);
 };
 
 #endif  // CHROME_BROWSER_IMPORTER_EXTERNAL_PROCESS_IMPORTER_HOST_H_