Switch to standard integer types in extensions/.

extensions/common/extension_messages.cc

 // 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.
 
 #include "extensions/common/extension_messages.h"
 
+#include <stddef.h>
+
 #include "content/public/common/common_param_traits.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/manifest.h"
 #include "extensions/common/manifest_handler.h"
 #include "extensions/common/permissions/permissions_data.h"
 #include "extensions/common/permissions/permissions_info.h"
 
 using extensions::APIPermission;
 using extensions::APIPermissionInfo;
 using extensions::APIPermissionSet;
@@ skipping 309 matching lines @@
          ReadParam(m, iter, &p->active_permissions) &&
          ReadParam(m, iter, &p->withheld_permissions);
 }
 
 void ParamTraits<ExtensionMsg_Loaded_Params>::Log(const param_type& p,
                                                   std::string* l) {
   l->append(p.id);
 }
 
 }  // namespace IPC