Revert 111566 - Breaks compile on win dbg.

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_