Move JoinString to the base namespace

extensions/common/permissions/permission_message_test_util.cc

 // 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.
 
 #include "extensions/common/permissions/permission_message_test_util.h"
 
 #include <algorithm>
 #include <iterator>
 
 #include "base/strings/string_split.h"
@@ skipping 84 matching lines @@
   return result;
 }
 
 // Returns the vector of messages concatenated into a single string, separated
 // by newlines, e.g.: "Bar"\n"Baz"\n
 base::string16 MessagesVectorToString(
     const std::vector<base::string16>& messages) {
   if (messages.empty())
     return base::ASCIIToUTF16("\n");
   return base::ASCIIToUTF16("\"") +
-         JoinString(messages, base::ASCIIToUTF16("\"\n\"")) +
+         base::JoinString(messages, base::ASCIIToUTF16("\"\n\"")) +
          base::ASCIIToUTF16("\"\n");
 }
 
 base::string16 MessagesToString(const PermissionMessageStrings& messages) {
   std::vector<base::string16> messages_vec;
   for (const PermissionMessageString& msg : messages)
     messages_vec.push_back(msg.message);
   return MessagesVectorToString(messages_vec);
 }
 
@@ skipping 289 matching lines @@
   for (size_t i = 0; i < expected_messages.size(); i++) {
     expected.push_back(PermissionMessageString(expected_messages[i],
                                                expected_submessages[i]));
   }
   return VerifyPermissionMessagesWithSubmessagesImpl(
       expected, GetLegacyMessages(permissions_data),
       GetNewMessages(permissions_data), check_order);
 }
 
 }  // namespace extensions