"up-to-date" should only use hyphens when used as compound modifier of a noun

chrome/browser/ui/webui/help/version_updater_chromeos.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/ui/webui/help/version_updater_chromeos.h"
 
 #include <cmath>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 182 matching lines @@
 }
 
 void VersionUpdaterCros::UpdateStatusChanged(
     const UpdateEngineClient::Status& status) {
   Status my_status = UPDATED;
   int progress = 0;
   base::string16 message;
 
   // If the updater is currently idle, just show the last operation (unless it
   // was previously checking for an update -- in that case, the system is
-  // up-to-date now).  See http://crbug.com/120063 for details.
+  // up to date now).  See http://crbug.com/120063 for details.
   UpdateEngineClient::UpdateStatusOperation operation_to_show = status.status;
   if (status.status == UpdateEngineClient::UPDATE_STATUS_IDLE &&
       last_operation_ !=
       UpdateEngineClient::UPDATE_STATUS_CHECKING_FOR_UPDATE) {
     operation_to_show = last_operation_;
   }
 
   switch (operation_to_show) {
     case UpdateEngineClient::UPDATE_STATUS_ERROR:
     case UpdateEngineClient::UPDATE_STATUS_REPORTING_ERROR_EVENT:
@@ skipping 35 matching lines @@
   }
 }
 
 void VersionUpdaterCros::OnUpdateCheck(
     UpdateEngineClient::UpdateCheckResult result) {
   // If version updating is not implemented, this binary is the most up-to-date
   // possible with respect to automatic updating.
   if (result == UpdateEngineClient::UPDATE_RESULT_NOTIMPLEMENTED)
     callback_.Run(UPDATED, 0, base::string16());
 }