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

chrome/browser/ui/toolbar/toolbar_actions_model.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/toolbar/toolbar_actions_model.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/location.h"
@@ skipping 732 matching lines @@
         toolbar_items_.begin(), toolbar_items_.end(),
         [&id](const ToolbarItem& item) { return item.id == id; });
     if (current_pos == toolbar_items_.end())
       continue;
 
     if (current_pos != desired_pos) {
       if (current_pos < desired_pos)
         std::rotate(current_pos, current_pos + 1, desired_pos + 1);
       else
         std::rotate(desired_pos, current_pos, current_pos + 1);
-      // Notify the observers to keep them up-to-date, unless we're highlighting
+      // Notify the observers to keep them up to date, unless we're highlighting
       // (in which case we're deliberately only showing a subset of actions).
       if (!is_highlighting())
         FOR_EACH_OBSERVER(
             Observer, observers_,
             OnToolbarActionMoved(id, desired_pos - toolbar_items_.begin()));
     }
     ++desired_pos;
   }
 
   if (last_known_positions_.size() > pref_position_size) {
@@ skipping 60 matching lines @@
         prefs_->GetInteger(extensions::pref_names::kToolbarSize);
     if (saved_icon_count != visible_icon_count_)
       SetVisibleIconCount(saved_icon_count);
   }
 }
 
 const extensions::Extension* ToolbarActionsModel::GetExtensionById(
     const std::string& id) const {
   return extension_registry_->enabled_extensions().GetByID(id);
 }