Move JoinString to the base namespace

chrome/browser/extensions/crx_installer.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 "chrome/browser/extensions/crx_installer.h"
 
 #include <map>
 #include <set>
 
 #include "base/bind.h"
@@ skipping 518 matching lines @@
 void CrxInstaller::OnInstallChecksComplete(int failed_checks) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   if (!service_weak_)
     return;
 
   // Check for requirement errors.
   if (!install_checker_.requirement_errors().empty()) {
     if (error_on_unsupported_requirements_) {
       ReportFailureFromUIThread(
           CrxInstallError(CrxInstallError::ERROR_DECLINED,
-                          base::UTF8ToUTF16(JoinString(
-                              install_checker_.requirement_errors(), ' '))));
+                          base::UTF8ToUTF16(base::JoinString(
+                              install_checker_.requirement_errors(), " "))));
       return;
     }
     install_flags_ |= kInstallFlagHasRequirementErrors;
   }
 
   // Check the blacklist state.
   if (install_checker_.blacklist_state() == extensions::BLACKLISTED_MALWARE) {
     install_flags_ |= kInstallFlagIsBlacklistedForMalware;
   }
 
@@ skipping 356 matching lines @@
   if (!prefs->DidExtensionEscalatePermissions(extension()->id()))
     return;
 
   if (client_) {
     AddRef();  // Balanced in InstallUIProceed() and InstallUIAbort().
     client_->ConfirmReEnable(this, extension());
   }
 }
 
 }  // namespace extensions