Create a dump when an invalid referrer in the network stack is encountered.

chrome/browser/net/chrome_network_delegate.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/net/chrome_network_delegate.h"
 
 #include <stdlib.h>
 
 #include <vector>
 
 #include "base/base_paths.h"
+#include "base/debug/dump_without_crashing.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/user_metrics.h"
 #include "base/path_service.h"
 #include "base/prefs/pref_member.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/time/time.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 202 matching lines @@
   base::TimeDelta request_lag = request_start -
       g_browser_process->io_thread()->creation_time();
   UMA_HISTOGRAM_TIMES("Net.IOThreadCreationToHTTPRequestStart", request_lag);
 }
 #endif  // defined(OS_ANDROID)
 
 void ReportInvalidReferrerSend(const GURL& target_url,
                                const GURL& referrer_url) {
   base::RecordAction(
       base::UserMetricsAction("Net.URLRequest_StartJob_InvalidReferrer"));
+  base::debug::DumpWithoutCrashing();
+  NOTREACHED();
 }
 
 }  // namespace
 
 ChromeNetworkDelegate::ChromeNetworkDelegate(
     extensions::EventRouterForwarder* event_router,
     BooleanPrefMember* enable_referrers)
     : profile_(NULL),
       enable_referrers_(enable_referrers),
       enable_do_not_track_(NULL),
@@ skipping 591 matching lines @@
   if (data_reduction_proxy_statistics_prefs_) {
     StoreAccumulatedContentLength(received_content_length,
                                   original_content_length,
                                   request_type,
                                   reinterpret_cast<Profile*>(profile_),
                                   data_reduction_proxy_statistics_prefs_);
   }
   received_content_length_ += received_content_length;
   original_content_length_ += original_content_length;
 }