[rac] Temporarily copy libaddressinput to Chrome.

third_party/libaddressinput/chromium/util/json.cc

-// Copyright 2013 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 "util/json.h"
-
-#include "base/json/json_reader.h"
-#include "base/logging.h"
-
-namespace i18n {
-namespace addressinput {
-
-Json::Json() {}
-Json::~Json() {}
-
-bool Json::ParseObject(const std::string& json) {
-  dict_.reset();
-
-  // |json| is converted to a |c_str()| here because rapidjson and other parts
-  // of the standalone library use char* rather than std::string.
-  scoped_ptr<base::Value> parsed(base::JSONReader::Read(json.c_str()));
-  if (parsed && parsed->IsType(base::Value::TYPE_DICTIONARY))
-    dict_.reset(static_cast<base::DictionaryValue*>(parsed.release()));
-
-  return !!dict_;
-}
-
-bool Json::HasStringValueForKey(const std::string& key) const {
-  base::Value* val = NULL;
-  dict_->GetWithoutPathExpansion(key, &val);
-  return val && val->IsType(base::Value::TYPE_STRING);
-}
-
-std::string Json::GetStringValueForKey(const std::string& key) const {
-  std::string result;
-  dict_->GetStringWithoutPathExpansion(key, &result);
-  return result;
-}
-
-}  // namespace addressinput
-}  // namespace i18n