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diff --git a/net/url_request/url_request_tracker.h b/net/url_request/url_request_tracker.h
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+++ b/net/url_request/url_request_tracker.h
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+// Copyright (c) 2006-2009 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 NET_URL_REQUEST_URL_REQUEST_TRACKER_H_
+#define NET_URL_REQUEST_URL_REQUEST_TRACKER_H_
+
+#include <vector>
+
+#include "base/ref_counted.h"
+#include "base/linked_list.h"
+#include "googleurl/src/gurl.h"
+#include "net/base/load_log.h"
+
+class URLRequest;
+
+// Class to track all of the live instances of URLRequest associated with a
+// particular URLRequestContext.  It keep a circular queue of the LoadLogs
+// for recently deceased requests.
+class URLRequestTracker {
+ public:
+  struct RecentRequestInfo {
+    GURL original_url;
+    scoped_refptr<net::LoadLog> load_log;
+  };
+
+  // Helper class to make URLRequest insertable into a base::LinkedList,
+  // without making the public interface expose base::LinkNode.
+  class Node : public base::LinkNode<Node> {
+   public:
+    Node(URLRequest* url_request) : url_request_(url_request) {}
+    ~Node() {}
+
+    URLRequest* url_request() const { return url_request_; }
+
+   private:
+    URLRequest* url_request_;
+  };
+
+  typedef std::vector<RecentRequestInfo> RecentRequestInfoList;
+
+  // The maximum number of entries for |graveyard_|.
+  static const size_t kMaxGraveyardSize;
+
+  // The maximum size of URLs to stuff into RecentRequestInfo.
+  static const size_t kMaxGraveyardURLSize;
+
+  URLRequestTracker();
+  ~URLRequestTracker();
+
+  // Returns a list of URLRequests that are alive.
+  std::vector<URLRequest*> GetLiveRequests();
+
+  // Clears the circular buffer of RecentRequestInfos.
+  void ClearRecentlyDeceased();
+
+  // Returns a list of recently completed URLRequests.
+  const RecentRequestInfoList GetRecentlyDeceased();
+
+  void Add(URLRequest* url_request);
+  void Remove(URLRequest* url_request);
+
+ private:
+  // Copy the goodies out of |url_request| that we want to show the
+  // user later on the about:net-internal page.
+  static const RecentRequestInfo ExtractInfo(URLRequest* url_request);
+
+  void InsertIntoGraveyard(const RecentRequestInfo& info);
+
+  base::LinkedList<Node> live_instances_;
+
+  size_t next_graveyard_index_;
+  RecentRequestInfoList graveyard_;
+};
+
+#endif  // NET_URL_REQUEST_URL_REQUEST_TRACKER_H_