Revert of Move JoinString to the base namespace

components/history/core/browser/top_sites_database.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 "components/history/core/browser/top_sites_database.h"
 
 #include "base/files/file_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_split.h"
@@ skipping 67 matching lines @@
       "load_completed INTEGER DEFAULT 0,"
       "last_forced INTEGER DEFAULT 0)";
   return db->Execute(kThumbnailsSql);
 }
 
 // Encodes redirects into a string.
 std::string GetRedirects(const MostVisitedURL& url) {
   std::vector<std::string> redirects;
   for (size_t i = 0; i < url.redirects.size(); i++)
     redirects.push_back(url.redirects[i].spec());
-  return base::JoinString(redirects, " ");
+  return JoinString(redirects, ' ');
 }
 
 // Decodes redirects from a string and sets them for the url.
 void SetRedirects(const std::string& redirects, MostVisitedURL* url) {
   std::vector<std::string> redirects_vector;
   base::SplitStringAlongWhitespace(redirects, &redirects_vector);
   for (size_t i = 0; i < redirects_vector.size(); ++i) {
     GURL redirects_url(redirects_vector[i]);
     if (redirects_url.is_valid())
       url->redirects.push_back(redirects_url);
@@ skipping 624 matching lines @@
   db->set_error_callback(base::Bind(&DatabaseErrorCallback, db.get(), db_name));
   db->set_page_size(4096);
   db->set_cache_size(32);
 
   if (!db->Open(db_name))
     return NULL;
   return db.release();
 }
 
 }  // namespace history