net: Add NET_API to net/base

net/base/pem_tokenizer.h

Index: net/base/pem_tokenizer.h
===================================================================
--- net/base/pem_tokenizer.h	(revision 85332)
+++ net/base/pem_tokenizer.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -10,6 +10,7 @@
 #include <vector>
 
 #include "base/string_piece.h"
+#include "net/base/net_api.h"
 
 namespace net {
 
@@ -17,7 +18,7 @@
 // using RFC 1421, Privacy Enhancement for Internet Electronic Mail. It
 // does not implement the full specification, most notably it does not
 // support the Encapsulated Header Portion described in Section 4.4.
-class PEMTokenizer {
+class NET_TEST PEMTokenizer {
  public:
   // Create a new PEMTokenizer that iterates through |str| searching for
   // instances of PEM encoded blocks that are of the |allowed_block_types|.