It is time.

ui/wm/core/accelerator_delegate.h

-// 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.
-
-#ifndef UI_WM_CORE_ACCELERATOR_DELEGATE_H_
-#define UI_WM_CORE_ACCELERATOR_DELEGATE_H_
-
-namespace ui {
-class Accelerator;
-class KeyEvent;
-}
-
-namespace wm {
-
-class AcceleratorDelegate {
- public:
-  virtual ~AcceleratorDelegate() {}
-
-  // Type of keys that triggers accelerators.
-  enum KeyType {
-    KEY_TYPE_SYSTEM,
-    KEY_TYPE_OTHER,
-  };
-
-  // Return true if the |accelerator| has been processed.
-  virtual bool ProcessAccelerator(const ui::KeyEvent& event,
-                                  const ui::Accelerator& accelerator,
-                                  KeyType key_type) = 0;
-};
-
-}  // namespace wm
-
-#endif  // UI_WM_CORE_ACCELERATOR_DELEGATE_H_