It is time.

ui/views/window/native_frame_view.h

-// Copyright (c) 2011 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_VIEWS_WINDOW_NATIVE_FRAME_VIEW_H_
-#define UI_VIEWS_WINDOW_NATIVE_FRAME_VIEW_H_
-
-#include "ui/views/window/non_client_view.h"
-
-namespace views {
-
-class Widget;
-
-class VIEWS_EXPORT NativeFrameView : public NonClientFrameView {
- public:
-  static const char kViewClassName[];
-
-  explicit NativeFrameView(Widget* frame);
-  virtual ~NativeFrameView();
-
-  // NonClientFrameView overrides:
-  virtual gfx::Rect GetBoundsForClientView() const override;
-  virtual gfx::Rect GetWindowBoundsForClientBounds(
-      const gfx::Rect& client_bounds) const override;
-  virtual int NonClientHitTest(const gfx::Point& point) override;
-  virtual void GetWindowMask(const gfx::Size& size,
-                             gfx::Path* window_mask) override;
-  virtual void ResetWindowControls() override;
-  virtual void UpdateWindowIcon() override;
-  virtual void UpdateWindowTitle() override;
-  virtual void SizeConstraintsChanged() override;
-
-  // View overrides:
-  virtual gfx::Size GetPreferredSize() const override;
-  virtual gfx::Size GetMinimumSize() const override;
-  virtual gfx::Size GetMaximumSize() const override;
-  virtual const char* GetClassName() const override;
-
- private:
-  // Our containing frame.
-  Widget* frame_;
-
-  DISALLOW_COPY_AND_ASSIGN(NativeFrameView);
-};
-
-}  // namespace views
-
-#endif  // UI_VIEWS_WINDOW_NATIVE_FRAME_VIEW_H_