Add the actual data being read to the OnBytesRead callback, take two....

net/url_request/url_request_job_tracker.cc

Index: net/url_request/url_request_job_tracker.cc
===================================================================
--- net/url_request/url_request_job_tracker.cc	(revision 55065)
+++ net/url_request/url_request_job_tracker.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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.
 
@@ -51,7 +51,8 @@
 }
 
 void URLRequestJobTracker::OnBytesRead(URLRequestJob* job,
+                                       const char* buf,
                                        int byte_count) {
   FOR_EACH_OBSERVER(JobObserver, observers_,
-                    OnBytesRead(job, byte_count));
+                    OnBytesRead(job, buf, byte_count));
 }