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

chrome/browser/content_settings/content_settings_pref_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_PREF_PROVIDER_H_
 #define CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PREF_PROVIDER_H_
 #pragma once
 
 // A content settings provider that takes its settings out of the pref service.
 
@@ skipping 100 matching lines @@
       ContentSettingsType content_type,
       const ResourceIdentifier& resource_identifier,
       ContentSetting content_setting);
 
   virtual ContentSetting GetContentSetting(
       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 GetAllContentSettingsRules(
       ContentSettingsType content_type,
       const ResourceIdentifier& resource_identifier,
       Rules* content_setting_rules) const;
 
   virtual void ClearAllContentSettingsRules(
       ContentSettingsType content_type);
 
   virtual void ShutdownOnUIThread();
 
@@ skipping 95 matching lines @@
   // Used around accesses to the value map objects to guarantee
   // thread safety.
   mutable base::Lock lock_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefProvider);
 };
 
 }  // namespace content_settings
 
 #endif  // CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PREF_PROVIDER_H_