net: remove DNS certificate checking code.

chrome/browser/net/chrome_dns_cert_provenance_checker_factory.cc

Index: chrome/browser/net/chrome_dns_cert_provenance_checker_factory.cc
diff --git a/chrome/browser/net/chrome_dns_cert_provenance_checker_factory.cc b/chrome/browser/net/chrome_dns_cert_provenance_checker_factory.cc
deleted file mode 100644
index 5206a24a064f82177b1f6c5e64f2de36506576b1..0000000000000000000000000000000000000000
--- a/chrome/browser/net/chrome_dns_cert_provenance_checker_factory.cc
+++ /dev/null
@@ -1,20 +0,0 @@
-// 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.
-
-#include "chrome/browser/net/chrome_dns_cert_provenance_checker_factory.h"
-
-static DnsCertProvenanceCheckerFactory g_factory;
-
-net::DnsCertProvenanceChecker* CreateDnsCertProvenanceChecker(
-    net::DnsRRResolver* dnsrr_resolver,
-    ChromeURLRequestContext* url_req_context) {
-  if (!g_factory)
-    return NULL;
-
-  return g_factory(dnsrr_resolver, url_req_context);
-}
-
-void SetDnsCertProvenanceCheckerFactory(DnsCertProvenanceCheckerFactory f) {
-  g_factory = f;
-}