Fixed browser crash when using Debug build:

chrome/browser/chrome_net_benchmarking_message_filter.h

Index: chrome/browser/chrome_net_benchmarking_message_filter.h
diff --git a/chrome/browser/chrome_net_benchmarking_message_filter.h b/chrome/browser/chrome_net_benchmarking_message_filter.h
new file mode 100644
index 0000000000000000000000000000000000000000..254938cf7b16eea634e757f96b4646451e3e70a2
--- /dev/null
+++ b/chrome/browser/chrome_net_benchmarking_message_filter.h
@@ -0,0 +1,38 @@
+// Copyright (c) 2013 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_CHROME_NET_BENCHMARKING_MESSAGE_FILTER_H_
+#define CHROME_BROWSER_CHROME_NET_BENCHMARKING_MESSAGE_FILTER_H_
+
+#include "content/public/browser/browser_message_filter.h"
+
+namespace net {
+class URLRequestContextGetter;
+}
+
+// This class filters out incoming Chrome-specific benchmarking IPC messages
+// for the renderer process on the IPC thread.
+class ChromeNetBenchmarkingMessageFilter
+    : public content::BrowserMessageFilter {
+ public:
+  ChromeNetBenchmarkingMessageFilter(
+      net::URLRequestContextGetter* request_context);
+
+  // content::BrowserMessageFilter methods:
+  virtual bool OnMessageReceived(const IPC::Message& message,
+                                 bool* message_was_ok) OVERRIDE;
+
+ private:
+  virtual ~ChromeNetBenchmarkingMessageFilter();
+
+  // Message handlers.
+  void OnCloseCurrentConnections();
+
+  scoped_refptr<net::URLRequestContextGetter> request_context_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeNetBenchmarkingMessageFilter);
+};
+
+#endif  // CHROME_BROWSER_CHROME_NET_BENCHMARKING_MESSAGE_FILTER_H_
+