Refcount the host content settings map from the content exceptions table model.

chrome/browser/content_exceptions_table_model.h

 // Copyright (c) 2010 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_CONTENT_EXCEPTIONS_TABLE_MODEL_H_
 #define CHROME_BROWSER_CONTENT_EXCEPTIONS_TABLE_MODEL_H_
 #pragma once
 
 #include <string>
 
 #include "app/table_model.h"
+#include "base/ref_counted.h"
 #include "chrome/common/content_settings.h"
 #include "chrome/common/content_settings_types.h"
 #include "chrome/browser/host_content_settings_map.h"
 
 class ContentExceptionsTableModel : public TableModel {
  public:
   ContentExceptionsTableModel(HostContentSettingsMap* map,
                               HostContentSettingsMap* off_the_record_map,
                               ContentSettingsType content_type);
 
@@ skipping 34 matching lines @@
   virtual void SetObserver(TableModelObserver* observer);
 
  private:
   HostContentSettingsMap* map(bool is_off_the_record) {
     return is_off_the_record ? off_the_record_map_ : map_;
   }
   HostContentSettingsMap::SettingsForOneType& entries(bool is_off_the_record) {
     return is_off_the_record ? off_the_record_entries_ : entries_;
   }
 
-  HostContentSettingsMap* map_;
-  HostContentSettingsMap* off_the_record_map_;
+  scoped_refptr<HostContentSettingsMap> map_;
+  scoped_refptr<HostContentSettingsMap> off_the_record_map_;
   ContentSettingsType content_type_;
   HostContentSettingsMap::SettingsForOneType entries_;
   HostContentSettingsMap::SettingsForOneType off_the_record_entries_;
   TableModelObserver* observer_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentExceptionsTableModel);
 };
 
 #endif  // CHROME_BROWSER_CONTENT_EXCEPTIONS_TABLE_MODEL_H_