It is time.

ui/views/view_constants.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_VIEW_CONSTANTS_H_
-#define UI_VIEWS_VIEW_CONSTANTS_H_
-
-#include "ui/views/views_export.h"
-
-namespace views {
-
-// Size (width or height) within which the user can hold the mouse and the
-// view should scroll.
-VIEWS_EXPORT extern const int kAutoscrollSize;
-
-// Time in milliseconds to autoscroll by a row. This is used during drag and
-// drop.
-VIEWS_EXPORT extern const int kAutoscrollRowTimerMS;
-
-// Used to determine whether a drop is on an item or before/after it. If a drop
-// occurs kDropBetweenPixels from the top/bottom it is considered before/after
-// the item, otherwise it is on the item.
-VIEWS_EXPORT extern const int kDropBetweenPixels;
-
-}  // namespace views
-
-#endif  // UI_VIEWS_VIEW_CONSTANTS_H_