ContentSettingsObserver (+ related classes) cleanup.

chrome/common/content_settings.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_COMMON_CONTENT_SETTINGS_H_
 #define CHROME_COMMON_CONTENT_SETTINGS_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "chrome/common/content_settings_pattern.h"
 #include "chrome/common/content_settings_types.h"
 
 // Different settings that can be assigned for a particular content type.  We
 // give the user the ability to set these on a global and per-host basis.
 enum ContentSetting {
   CONTENT_SETTING_DEFAULT = 0,
   CONTENT_SETTING_ALLOW,
   CONTENT_SETTING_BLOCK,
   CONTENT_SETTING_ASK,
   CONTENT_SETTING_SESSION_ONLY,
   CONTENT_SETTING_NUM_SETTINGS
 };
 
 // Range-checked conversion of an int to a ContentSetting, for use when reading
 // prefs off disk.
 ContentSetting IntToContentSetting(int content_setting);
 
-// Aggregates the permissions for the different content types.
-struct ContentSettings {
-  ContentSettings();
-  explicit ContentSettings(ContentSetting default_setting);
-
-  ContentSetting settings[CONTENT_SETTINGS_NUM_TYPES];
-};
-
 struct ContentSettingPatternSource {
   ContentSettingPatternSource(const ContentSettingsPattern& primary_pattern,
                               const ContentSettingsPattern& secondary_patttern,
                               ContentSetting setting,
                               const std::string& source,
                               bool incognito);
   ContentSettingPatternSource();
   ContentSettingsPattern primary_pattern;
   ContentSettingsPattern secondary_pattern;
   ContentSetting setting;
   std::string source;
   bool incognito;
 };
 
 typedef std::vector<ContentSettingPatternSource> ContentSettingsForOneType;
 
 struct RendererContentSettingRules {
   RendererContentSettingRules();
   ~RendererContentSettingRules();
   ContentSettingsForOneType image_rules;
   ContentSettingsForOneType script_rules;
 };
 
 #endif  // CHROME_COMMON_CONTENT_SETTINGS_H_