Add a method to the content_settings::ProviderInterface to return the content settings Value.

chrome/browser/content_settings/content_settings_extension_provider.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_CONTENT_SETTINGS_CONTENT_SETTINGS_EXTENSION_PROVIDER_H_
 #define CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_EXTENSION_PROVIDER_H_
 
 #include <string>
 
 #include "chrome/browser/content_settings/content_settings_observable_provider.h"
@@ skipping 11 matching lines @@
 class ExtensionProvider : public ObservableProvider,
                           public ExtensionContentSettingsStore::Observer {
  public:
   ExtensionProvider(ExtensionContentSettingsStore* extensions_settings,
                     bool incognito);
 
   virtual ~ExtensionProvider();
 
   // Provider Interface implementations.
   virtual ContentSetting GetContentSetting(
-      const GURL& embedded_url,
-      const GURL& top_level_url,
+      const GURL& primary_url,
+      const GURL& secondary_url,
       ContentSettingsType content_type,
       const ResourceIdentifier& resource_identifier) const;
 
+  virtual Value* GetContentSettingValue(
+      const GURL& primary_url,
+      const GURL& secondary_url,
+      ContentSettingsType content_type,
+      const ResourceIdentifier& resource_identifier) const;
+
   virtual void SetContentSetting(
       const ContentSettingsPattern& embedded_url_pattern,
       const ContentSettingsPattern& top_level_url_pattern,
       ContentSettingsType content_type,
       const ResourceIdentifier& resource_identifier,
       ContentSetting content_setting) {}
 
   virtual void GetAllContentSettingsRules(
       ContentSettingsType content_type,
       const ResourceIdentifier& resource_identifier,
@@ skipping 16 matching lines @@
 
   // The backend storing content setting rules defined by extensions.
   scoped_refptr<ExtensionContentSettingsStore> extensions_settings_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionProvider);
 };
 
 }  // namespace content_settings
 
 #endif  // CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_EXTENSION_PROVIDER_H_