It is time.

ui/wm/core/nested_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_NESTED_ACCELERATOR_DELEGATE_H_
-#define UI_WM_CORE_NESTED_ACCELERATOR_DELEGATE_H_
-
-namespace ui {
-class Accelerator;
-}
-
-namespace wm {
-
-// A delegate interface that implements the behavior of nested accelerator
-// handling.
-class NestedAcceleratorDelegate {
- public:
-  enum Result {
-    RESULT_PROCESSED,
-    RESULT_NOT_PROCESSED,
-    // The key event should be ignored now and instead be reposted so that
-    // next event loop.
-    RESULT_PROCESS_LATER,
-  };
-
-  virtual ~NestedAcceleratorDelegate() {}
-
-  // Attempts to process the |accelerator|.
-  virtual Result ProcessAccelerator(const ui::Accelerator& accelerator) = 0;
-};
-
-}  // namespace wm
-
-#endif  // UI_WM_CORE_NESTED_ACCELERATOR_DELEGATE_H_