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

remoting/client/normalizing_input_filter_cros.cc

 // Copyright 2015 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 "remoting/client/normalizing_input_filter_cros.h"
 
 #include "base/logging.h"
 #include "ui/events/keycodes/dom/dom_code.h"
 
 namespace remoting {
@@ skipping 63 matching lines @@
 // As with the OSKey remapping described above, this is fed into this filter
 // as Alt followed by RightClick. However, because there are other ways to
 // generate RightClick (two-finger tap, for example), rather than suppressing
 // the Alt key as we do for the OSKey (which would allow Alt+LeftClick to be
 // interpreted as interpreted as RightClick as per the ChromeOS idiom), the
 // filter maps RightClick to LeftClick while LeftAlt is held, which allows
 // Alt+LeftClick to be injected. The equivalent mapping using RightAlt is
 // unchanged, allowing Alt+RightClick also to be injected, as long as the
 // target application doesn't distinguish between left and right Alt keys.
 //
-// This file must be kept up-to-date with changes to
+// This file must be kept up to date with changes to
 // chrome/browser/chromeos/events/event_rewriter.cc
 
 
 NormalizingInputFilterCros::NormalizingInputFilterCros(
     protocol::InputStub* input_stub)
     : protocol::InputFilter(input_stub),
       deferred_key_is_rewriting_(false),
       modifying_key_(0),
       left_alt_is_pressed_(false),
       right_alt_is_pressed_(false),
@@ skipping 141 matching lines @@
     case static_cast<uint32_t>(ui::DomCode::PAGE_UP):
       event->set_usb_keycode(static_cast<uint32_t>(ui::DomCode::ARROW_UP));
       break;
     case static_cast<uint32_t>(ui::DomCode::DEL):
       event->set_usb_keycode(static_cast<uint32_t>(ui::DomCode::BACKSPACE));
       break;
   }
 }
 
 }  // namespace remoting