Delegating the "are images allowed" decision to renderer.

chrome/browser/content_settings/host_content_settings_map.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.
 
 // Maps hostnames to custom content settings.  Written on the UI thread and read
 // on any thread.  One instance per profile.
 
 #ifndef CHROME_BROWSER_CONTENT_SETTINGS_HOST_CONTENT_SETTINGS_MAP_H_
 #define CHROME_BROWSER_CONTENT_SETTINGS_HOST_CONTENT_SETTINGS_MAP_H_
 #pragma once
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/ref_counted.h"
 #include "base/synchronization/lock.h"
 #include "base/values.h"
 #include "chrome/browser/content_settings/content_settings_observer.h"
+#include "chrome/browser/content_settings/content_settings_provider.h"
 #include "chrome/browser/prefs/pref_change_registrar.h"
 #include "chrome/common/content_settings.h"
 #include "chrome/common/content_settings_pattern.h"
 #include "content/browser/browser_thread.h"
 #include "content/common/notification_observer.h"
 #include "content/common/notification_registrar.h"
 
 namespace content_settings {
 class DefaultProviderInterface;
 class ProviderInterface;
 }  // namespace content_settings
 
 class ContentSettingsDetails;
 class ExtensionService;
 class GURL;
 class PrefService;
 class Profile;
 
 class HostContentSettingsMap
     : public content_settings::Observer,
       public NotificationObserver,
       public base::RefCountedThreadSafe<HostContentSettingsMap> {
  public:
-  // TODO(markusheintz): I sold my soul to the devil on order to add this tuple.
-  // I really want my soul back, so I really will change this ASAP.
-  typedef Tuple4<ContentSettingsPattern,
-                 ContentSettingsPattern,
-                 ContentSetting,
-                 std::string> PatternSettingSourceTuple;
-  typedef std::vector<PatternSettingSourceTuple> SettingsForOneType;
-
   HostContentSettingsMap(PrefService* prefs,
                          ExtensionService* extension_service,
                          bool incognito);
 
   static void RegisterUserPrefs(PrefService* prefs);
 
   // Returns the default setting for a particular content type.
   //
   // This may be called on any thread.
   ContentSetting GetDefaultContentSetting(
@@ skipping 42 matching lines @@
   // Returns all ContentSettings which apply to the given URLs. For content
   // setting types that require an additional resource identifier, the default
   // content setting is returned.
   //
   // This may be called on any thread.
   ContentSettings GetContentSettings(
       const GURL& primary_url,
       const GURL& secondary_url) const;
 
   // For a given content type, returns all patterns with a non-default setting,
-  // mapped to their actual settings, in lexicographical order.  |settings|
-  // must be a non-NULL outparam. If this map was created for the
-  // incognito profile, it will only return those settings differing from
-  // the main map. For ContentSettingsTypes that require an resource identifier
-  // to be specified, the |resource_identifier| must be non-empty.
+  // mapped to their actual settings. Settings of each provider are sorted
+  // according to |sort_function|. |settings| must be a non-NULL outparam. If
+  // this map was created for the incognito profile, it will only return those
+  // settings differing from the main map. For ContentSettingsTypes that require
+  // an resource identifier to be specified, the |resource_identifier| must be
+  // non-empty.
   //
   // This may be called on any thread.
-  void GetSettingsForOneType(ContentSettingsType content_type,
-                             const std::string& resource_identifier,
-                             SettingsForOneType* settings) const;
+  void GetSettingsForOneType(
+      ContentSettingsType content_type,
+      const std::string& resource_identifier,
+      content_settings::ProviderInterface::Rule::SortFunction sort_function,
+      ContentSettingsForOneType* settings) const;
 
   // Sets the default setting for a particular content type. This method must
   // not be invoked on an incognito map.
   //
   // This should only be called on the UI thread.
   void SetDefaultContentSetting(ContentSettingsType content_type,
                                 ContentSetting setting);
 
   // Sets the content setting for the given patterns and content type.
   // Setting the value to CONTENT_SETTING_DEFAULT causes the default setting
@@ skipping 123 matching lines @@
   mutable base::Lock lock_;
 
   // Misc global settings.
   bool block_third_party_cookies_;
   bool is_block_third_party_cookies_managed_;
 
   DISALLOW_COPY_AND_ASSIGN(HostContentSettingsMap);
 };
 
 #endif  // CHROME_BROWSER_CONTENT_SETTINGS_HOST_CONTENT_SETTINGS_MAP_H_