Don't need to export an abstract interface.

net/url_request/fraudulent_certificate_reporter.cc

Index: net/url_request/fraudulent_certificate_reporter.cc
===================================================================
--- net/url_request/fraudulent_certificate_reporter.cc	(revision 106094)
+++ net/url_request/fraudulent_certificate_reporter.cc	(working copy)
@@ -1,14 +0,0 @@
-// Copyright (c) 2011 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 "net/url_request/fraudulent_certificate_reporter.h"
-
-namespace net {
-
-// This is necessary to build the net.dll shared library on Windows.
-FraudulentCertificateReporter::~FraudulentCertificateReporter() {
-}
-
-}  // namespace net
-