libaddressinput - merge LookupKeyUtil into Retriever

third_party/libaddressinput/chromium/cpp/src/lookup_key_util.cc

-// Copyright (C) 2013 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "lookup_key_util.h"
-
-#include <cassert>
-#include <string>
-
-namespace i18n {
-namespace addressinput {
-
-LookupKeyUtil::LookupKeyUtil(const std::string& validation_data_url)
-    : validation_data_url_(validation_data_url) {
-  assert(validation_data_url_.length() > 0);
-  assert(validation_data_url_[validation_data_url_.length() - 1] == '/');
-}
-
-LookupKeyUtil::~LookupKeyUtil() {}
-
-std::string LookupKeyUtil::GetUrlForKey(const std::string& key) const {
-  return validation_data_url_ + key;
-}
-
-std::string LookupKeyUtil::GetKeyForUrl(const std::string& url) const {
-  return IsValidationDataUrl(url) ? url.substr(validation_data_url_.length())
-                                  : std::string();
-}
-
-bool LookupKeyUtil::IsValidationDataUrl(const std::string& url) const {
-  return
-      url.compare(0, validation_data_url_.length(), validation_data_url_) == 0;
-}
-
-}  // namespace addressinput
-}  // namespace i18n