Add a referrer class to be used in the browser process whenever passing around referrsr

content/public/common/referrer.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 CONTENT_PUBLIC_COMMON_REFERRER_H_
+#define CONTENT_PUBLIC_COMMON_REFERRER_H_
+#pragma once
+
+#include "content/common/content_export.h"
+#include "googleurl/src/gurl.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebReferrerPolicy.h"
+
+namespace content {
+
+// This struct holds a referrer URL, as well as the referrer policy to be
+// applied to this URL. When passing around referrers that will eventually end
+// up being used for URL requests, always use this struct.
+struct CONTENT_EXPORT Referrer {
+  Referrer(const GURL& url, WebKit::WebReferrerPolicy policy)
+      : url(url),
+        policy(policy) {
+  }
+  Referrer()
+      : policy(WebKit::WebReferrerPolicyDefault) {
+  }
+
+  GURL url;
+  WebKit::WebReferrerPolicy policy;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_COMMON_REFERRER_H_