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

chrome/browser/content_settings/content_settings_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.
 
 // Interface for objects providing content setting rules.
 
 #ifndef CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PROVIDER_H_
 #define CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PROVIDER_H_
 #pragma once
 
 #define NO_RESOURCE_IDENTIFIER ""
 
 #include <string>
 #include <vector>
 
+#include "base/values.h"
 #include "chrome/browser/content_settings/content_settings_pattern.h"
 #include "chrome/common/content_settings.h"
 
 class GURL;
 
 namespace content_settings {
 
 typedef std::string ResourceIdentifier;
 
 class DefaultProviderInterface {
@@ skipping 42 matching lines @@
   // ContentSettingsTypes that require a resource identifier to be specified,
   // the |resource_identifier| must be non-empty.
   //
   // This may be called on any thread.
   virtual ContentSetting GetContentSetting(
       const GURL& primary_url,
       const GURL& secondary_url,
       ContentSettingsType content_type,
       const ResourceIdentifier& resource_identifier) const = 0;
 
+  // Returns the content setting |Value| for the given |content_type| which
+  // applies to the given |primary_url|, |secondary_url| pair. The ownership of
+  // the returned |Value| pointer is transfered to the caller. If no content
+  // settings value is available for the given parameters then NULL is returned.
+  // For ContentSettingsTypes that require a resource identifier to be
+  // specified, the |resource_identifier| must be non-empty.
+  //
+  // This may be called on any thread.
+  virtual Value* GetContentSettingValue(
+      const GURL& primary_url,
+      const GURL& secondary_url,
+      ContentSettingsType content_type,
+      const ResourceIdentifier& resource_identifier) const = 0;
+
+
   // Sets the content setting for a particular |primary_pattern|,
   // |secondary_pattern|, |content_type| tuple. For ContentSettingsTypes that
   // require a resource identifier to be specified, the |resource_identifier|
   // must be non-empty.
   //
   // This should only be called on the UI thread, and not after
   // ShutdownOnUIThread has been called.
   virtual void SetContentSetting(
       const ContentSettingsPattern& primary_pattern,
       const ContentSettingsPattern& secondary_pattern,
@@ skipping 28 matching lines @@
   // Detaches the Provider from all Profile-related objects like PrefService.
   // This methods needs to be called before destroying the Profile.
   // Afterwards, none of the methods above that should only be called on the UI
   // thread should be called anymore.
   virtual void ShutdownOnUIThread() = 0;
 };
 
 }  // namespace content_settings
 
 #endif  // CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PROVIDER_H_