Switch to standard integer types in mojo/.

mojo/public/cpp/bindings/string.h

 // Copyright 2014 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 MOJO_PUBLIC_CPP_BINDINGS_STRING_H_
 #define MOJO_PUBLIC_CPP_BINDINGS_STRING_H_
 
+#include <stddef.h>
+
 #include <string>
 
 #include "mojo/public/cpp/bindings/lib/array_internal.h"
 #include "mojo/public/cpp/bindings/type_converter.h"
 #include "mojo/public/cpp/environment/logging.h"
 
 namespace mojo {
 
 // A UTF-8 encoded character string that can be null. Provides functions that
 // are similar to std::string, along with access to the underlying std::string
@@ skipping 148 matching lines @@
 
 template <>
 struct TypeConverter<String, const char*> {
   // |input| may be null, in which case a null String will be returned.
   static String Convert(const char* input) { return String(input); }
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_STRING_H_