Move JoinString to the base namespace

chromeos/network/onc/onc_validator.cc

 // Copyright (c) 2012 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 "chromeos/network/onc/onc_validator.h"
 
 #include <algorithm>
 
 #include "base/json/json_writer.h"
 #include "base/logging.h"
@@ skipping 307 matching lines @@
 
   return !error_on_missing_field_ || all_required_exist;
 }
 
 namespace {
 
 std::string JoinStringRange(const std::vector<const char*>& strings,
                             const std::string& separator) {
   std::vector<std::string> string_vector;
   std::copy(strings.begin(), strings.end(), std::back_inserter(string_vector));
-  return JoinString(string_vector, separator);
+  return base::JoinString(string_vector, separator);
 }
 
 }  // namespace
 
 bool Validator::FieldExistsAndHasNoValidValue(
     const base::DictionaryValue& object,
     const std::string& field_name,
     const std::vector<const char*>& valid_values) {
   std::string actual_value;
   if (!object.GetStringWithoutPathExpansion(field_name, &actual_value))
@@ skipping 606 matching lines @@
     if (type == kClient)
       all_required_exist &= RequireField(*result, kPKCS12);
     else if (type == kServer || type == kAuthority)
       all_required_exist &= RequireField(*result, kX509);
   }
 
   return !error_on_missing_field_ || all_required_exist;
 }
 
 std::string Validator::MessageHeader() {
-  std::string path = path_.empty() ? "toplevel" : JoinString(path_, ".");
+  std::string path = path_.empty() ? "toplevel" : base::JoinString(path_, ".");
   std::string message = "At " + path + ": ";
   return message;
 }
 
 }  // namespace onc
 }  // namespace chromeos