mus: Let clients set the cursor of their window.

components/mus/public/interfaces/cursor.mojom

Index: components/mus/public/interfaces/cursor.mojom
diff --git a/components/mus/public/interfaces/cursor.mojom b/components/mus/public/interfaces/cursor.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..c92aef24aa7c909175a33dd82314204c5b2a4126
--- /dev/null
+++ b/components/mus/public/interfaces/cursor.mojom
@@ -0,0 +1,57 @@
+// 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 mus.mojom;
+
+// Standard Cursor numbers. These are the same as Chrome's ui::Cursor and
+// blink's WebCursorInfo.
+enum Cursor {
+  // NULL is kept for compatibility with chrome declarations. In chrome code, it
+  // is treated exactly like POINTER, the default pointer.
+  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
+};