Switch to standard integer types in ppapi/.

ppapi/tests/test_tcp_server_socket_private.h

 // 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.
 
 #ifndef PPAPI_TESTS_TEST_TCP_SERVER_SOCKET_PRIVATE_H_
 #define PPAPI_TESTS_TEST_TCP_SERVER_SOCKET_PRIVATE_H_
 
+#include <stddef.h>
+
 #include <cstddef>
 #include <string>
 
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/tests/test_case.h"
 
 struct PP_NetAddress_Private;
 
 namespace pp {
 
@@ skipping 27 matching lines @@
                          int32_t backlog);
 
   std::string TestListen();
   std::string TestBacklog();
 
   std::string host_;
   uint16_t port_;
 };
 
 #endif  // PPAPI_TESTS_TEST_TCP_SERVER_SOCKET_PRIVATE_H_