Add ContentSettingsProvider Interface.

chrome/browser/content_settings/host.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_HOST_H_
+#define CHROME_BROWSER_CONTENT_SETTINGS_HOST_H_
+#pragma once
+
+#include "googleurl/src/gurl.h"
+
+namespace content_settings {
+
+class Host {
+ public:
+  Host(const GURL& requesting_url, const GURL& embedding_url);
+
+  const GURL& requesting_url() const {
+    return requesting_url_;
+  }
+
+  const GURL& embedding_url() const {
+    return embedding_url_;
+  }
+
+ private:
+  const GURL requesting_url_;
+  const GURL embedding_url_;
+};
+
+}  // namespace content_settings
+
+#endif  // CHROME_BROWSER_CONTENT_SETTINGS_HOST_H_