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

components/drive/chromeos/directory_loader.cc

 // Copyright 2014 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/drive/chromeos/directory_loader.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/callback.h"
@@ skipping 375 matching lines @@
 
   int64_t remote_changestamp = about_resource->largest_change_id();
 
   // Start loading the directory.
   int64_t directory_changestamp = std::max(
       entry->directory_specific_info().changestamp(), *local_changestamp);
 
   DirectoryFetchInfo directory_fetch_info(
       local_id, entry->resource_id(), remote_changestamp);
 
-  // If the directory's changestamp is up-to-date or the global changestamp of
+  // If the directory's changestamp is up to date or the global changestamp of
   // the metadata DB is new enough (which means the normal changelist loading
   // should finish very soon), just schedule to run the callback, as there is no
   // need to fetch the directory.
   if (directory_changestamp >= remote_changestamp ||
       *local_changestamp + kMinimumChangestampGap > remote_changestamp) {
     OnDirectoryLoadComplete(local_id, FILE_ERROR_OK);
   } else {
     // Start fetching the directory content, and mark it with the changestamp
     // |remote_changestamp|.
     LoadDirectoryFromServer(directory_fetch_info);
@@ skipping 155 matching lines @@
   // Also notify the observers.
   if (error == FILE_ERROR_OK && !directory_path->empty()) {
     FOR_EACH_OBSERVER(ChangeListLoaderObserver,
                       observers_,
                       OnDirectoryReloaded(*directory_path));
   }
 }
 
 }  // namespace internal
 }  // namespace drive