[aura-mus] Add ui::CursorData, with mojo serialization.

services/ui/public/interfaces/cursor.mojom

-// Copyright 2015 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.
-
-module ui.mojom;
-
-// Standard Cursor numbers. These are the same as Chrome's ui::Cursor and
-// blink's WebCursorInfo.
-enum CursorType {
-  // NULL is kept for compatibility with chrome declarations. In chrome code, it
-  // is treated exactly like POINTER, the default pointer.
-  CURSOR_NULL = 0,
-  POINTER,
-  CROSS,
-  HAND,
-  IBEAM,
-  WAIT,
-  HELP,
-  EAST_RESIZE,
-  NORTH_RESIZE,
-  NORTH_EAST_RESIZE,
-  NORTH_WEST_RESIZE,
-  SOUTH_RESIZE,
-  SOUTH_EAST_RESIZE,
-  SOUTH_WEST_RESIZE,
-  WEST_RESIZE,
-  NORTH_SOUTH_RESIZE,
-  EAST_WEST_RESIZE,
-  NORTH_EAST_SOUTH_WEST_RESIZE,
-  NORTH_WEST_SOUTH_EAST_RESIZE,
-  COLUMN_RESIZE,
-  ROW_RESIZE,
-  MIDDLE_PANNING,
-  EAST_PANNING,
-  NORTH_PANNING,
-  NORTH_EAST_PANNING,
-  NORTH_WEST_PANNING,
-  SOUTH_PANNING,
-  SOUTH_EAST_PANNING,
-  SOUTH_WEST_PANNING,
-  WEST_PANNING,
-  MOVE,
-  VERTICAL_TEXT,
-  CELL,
-  CONTEXT_MENU,
-  ALIAS,
-  PROGRESS,
-  NO_DROP,
-  COPY,
-  NONE,
-  NOT_ALLOWED,
-  ZOOM_IN,
-  ZOOM_OUT,
-  GRAB,
-  GRABBING,
-  CUSTOM
-};