| // Copyright 2019 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 COMPONENTS_VIZ_COMMON_VERTICAL_SCROLL_DIRECTION_H_ |
| #define COMPONENTS_VIZ_COMMON_VERTICAL_SCROLL_DIRECTION_H_ |
| |
| namespace viz { |
| |
| // Used to indicate the vertical scroll direction of the root layer. Note that |
| // |kNull| is only used to represent the absence of a vertical scroll direction. |
| // See services/viz/public/mojom/vertical_scroll_position.mojom. |
| enum class VerticalScrollDirection { kNull, kDown, kUp }; |
| |
| } // namespace viz |
| |
| #endif // COMPONENTS_VIZ_COMMON_VERTICAL_SCROLL_DIRECTION_H_ |
