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diff --git a/chrome/browser/net/url_request_tracking.h b/chrome/browser/net/url_request_tracking.h
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+++ b/chrome/browser/net/url_request_tracking.h
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+// Copyright (c) 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 CHROME_BROWSER_NET_URL_REQUEST_TRACKING_H_
+#define CHROME_BROWSER_NET_URL_REQUEST_TRACKING_H_
+
+class URLRequest;
+
+namespace chrome_browser_net {
+
+// Sets the given ID on the given request for later retrieval. This information
+// duplicates a field in the ResourceDispatcherHost's user data, but is also
+// set for non-ResourceDispatcher-related requests. Having this one global
+// place allows us to do more general things, such as assigning traffic for the
+// network view in the task manager.
+//
+// If you make a request on behalf of a child process, please call this
+// function. The default value will be -1 which will be interprepreted as
+// originating from the browser itself.
+//
+// The ID is the child process' unique ID (not a PID) of the process originating
+// the request. This is normally the renderer corresponding to the load. If a
+// plugin process does a request through a renderer process this will be the
+// plugin (the originator of the request).
+void SetOriginProcessUniqueIDForRequest(int id, URLRequest* request);
+
+// Returns the child process' unique ID that has been previously set by
+// SetOriginProcessUniqueIDForRequest. If no ID has been set, the return
+// value is -1. We use this to identify requests made by the browser process.
+int GetOriginProcessUniqueIDForRequest(const URLRequest* request);
+
+}  // namespace chrome_browser_net
+
+#endif  // CHROME_BROWSER_NET_URL_REQUEST_TRACKING_H_