net: extract net/cert out of net/base

net/base/cert_verifier.cc

Index: net/base/cert_verifier.cc
diff --git a/net/base/cert_verifier.cc b/net/base/cert_verifier.cc
deleted file mode 100644
index fd28f1df7a455ecb5069ecd388bfa13a749607da..0000000000000000000000000000000000000000
--- a/net/base/cert_verifier.cc
+++ /dev/null
@@ -1,16 +0,0 @@
-// 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 "net/base/cert_verifier.h"
-
-#include "net/base/cert_verify_proc.h"
-#include "net/base/multi_threaded_cert_verifier.h"
-
-namespace net {
-
-CertVerifier* CertVerifier::CreateDefault() {
-  return new MultiThreadedCertVerifier(CertVerifyProc::CreateDefault());
-}
-
-}  // namespace net