Add checks to DEBUG mode that no instance of URLRequest or URLFetcher survive...

net/url_request/url_request.h

 // 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_H_
 #define NET_URL_REQUEST_URL_REQUEST_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
+#include "base/leak_tracker.h"
 #include "base/linked_ptr.h"
 #include "base/logging.h"
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/load_states.h"
 #include "net/http/http_response_info.h"
 #include "net/url_request/url_request_status.h"
 
 namespace base {
@@ skipping 563 matching lines @@
   int redirect_limit_;
 
   // Cached value for use after we've orphaned the job handling the
   // first transaction in a request involving redirects.
   uint64 final_upload_progress_;
 
   // The priority level for this request.  Objects like ClientSocketPool use
   // this to determine which URLRequest to allocate sockets to first.
   int priority_;
 
+  base::LeakTracker<URLRequest> leak_tracker_;
+
   DISALLOW_COPY_AND_ASSIGN(URLRequest);
 };
 
 //-----------------------------------------------------------------------------
 // To help ensure that all requests are cleaned up properly, we keep static
 // counters of live objects.  TODO(darin): Move this leak checking stuff into
 // a common place and generalize it so it can be used everywhere (Bug 566229).
 
 #ifndef NDEBUG
 
 struct URLRequestMetrics {
   int object_count;
   URLRequestMetrics() : object_count(0) {}
   ~URLRequestMetrics();
 };
 
 extern URLRequestMetrics url_request_metrics;
 
 #define URLREQUEST_COUNT_CTOR() url_request_metrics.object_count++
 #define URLREQUEST_COUNT_DTOR() url_request_metrics.object_count--
 
 #else  // disable leak checking in release builds...
 
 #define URLREQUEST_COUNT_CTOR()
 #define URLREQUEST_COUNT_DTOR()
 
 #endif  // #ifndef NDEBUG
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_H_