Support Serializing and Deserializing RepeatedField / RepeatedPtrField in IPC::Message

chrome/common/safe_browsing/protobuf_message_param_traits.h

-// Copyright 2015 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 CHROME_COMMON_SAFE_BROWSING_PROTOBUF_MESSAGE_PARAM_TRAITS_H_
-#define CHROME_COMMON_SAFE_BROWSING_PROTOBUF_MESSAGE_PARAM_TRAITS_H_
-
-#include <limits.h>
-
-#include <string>
-
-#include "base/pickle.h"
-#include "ipc/ipc_message.h"
-#include "ipc/ipc_param_traits.h"
-#include "third_party/protobuf/src/google/protobuf/repeated_field.h"
-
-namespace IPC {
-
-template <class Element>
-struct ParamTraits<google::protobuf::RepeatedPtrField<Element>> {
-  typedef google::protobuf::RepeatedPtrField<Element> param_type;
-
-  static void GetSize(base::PickleSizer* s, const param_type& p) {
-    GetParamSize(s, p.size());
-    for (const auto& element : p)
-      GetParamSize(s, element);
-  }
-
-  static void Write(base::Pickle* m, const param_type& p) {
-    WriteParam(m, p.size());
-    for (const auto& element : p)
-      WriteParam(m, element);
-  }
-
-  static bool Read(const base::Pickle* m,
-                   base::PickleIterator* iter,
-                   param_type* p) {
-    int size;
-    if (!iter->ReadLength(&size) || size < 0)
-      return false;
-    if (INT_MAX / static_cast<int>(sizeof(void*)) <= size)
-      return false;
-    p->Clear();
-    p->Reserve(size);
-    while (size--) {
-      if (!ReadParam(m, iter, p->Add()))
-        return false;
-    }
-    return true;
-  }
-
-  static void Log(const param_type& p, std::string* l) {
-    bool logged_first = false;
-    for (const auto& element : p) {
-      if (logged_first)
-        l->push_back(' ');
-      else
-        logged_first = true;
-      LogParam(element, l);
-    }
-  }
-};
-
-}  // namespace IPC
-
-#endif  // CHROME_COMMON_SAFE_BROWSING_PROTOBUF_MESSAGE_PARAM_TRAITS_H_