mus: Let clients set the cursor of their window.

components/mus/ws/window_tree_impl.h

 // Copyright 2014 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_MUS_WS_WINDOW_TREE_IMPL_H_
 #define COMPONENTS_MUS_WS_WINDOW_TREE_IMPL_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 103 matching lines @@
                                      const ServerWindow* new_parent,
                                      const ServerWindow* old_parent,
                                      bool originated_change);
   void ProcessWindowReorder(const ServerWindow* window,
                             const ServerWindow* relative_window,
                             mojom::OrderDirection direction,
                             bool originated_change);
   void ProcessWindowDeleted(const WindowId& window, bool originated_change);
   void ProcessWillChangeWindowVisibility(const ServerWindow* window,
                                          bool originated_change);
+  void ProcessCursorChanged(const ServerWindow* window,
+                            int32_t cursor_id,
+                            bool originated_change);
   void ProcessFocusChanged(const ServerWindow* old_focused_window,
                            const ServerWindow* new_focused_window);
   void ProcessTransientWindowAdded(const ServerWindow* window,
                                    const ServerWindow* transient_window,
                                    bool originated_change);
   void ProcessTransientWindowRemoved(const ServerWindow* window,
                                      const ServerWindow* transient_window,
                                      bool originated_change);
 
  private:
@@ skipping 95 matching lines @@
   void AttachSurface(Id window_id,
                      mojom::SurfaceType type,
                      mojo::InterfaceRequest<mojom::Surface> surface,
                      mojom::SurfaceClientPtr client) override;
   void Embed(Id transport_window_id,
              mojom::WindowTreeClientPtr client,
              uint32_t policy_bitmask,
              const EmbedCallback& callback) override;
   void SetFocus(uint32_t window_id) override;
   void SetCanFocus(uint32_t window_id, bool can_focus) override;
+  void SetPredefinedCursor(uint32_t change_id,
+                           uint32_t window_id,
+                           mus::mojom::Cursor cursor_id) override;
   void SetWindowTextInputState(uint32_t window_id,
                                mojo::TextInputStatePtr state) override;
   void SetImeVisibility(Id transport_window_id,
                         bool visible,
                         mojo::TextInputStatePtr state) override;
   void OnWindowInputEventAck(uint32_t event_id) override;
   void SetClientArea(Id transport_window_id, mojo::InsetsPtr insets) override;
   void WmResponse(uint32 change_id, bool response) override;
 
   // AccessPolicyDelegate:
@@ skipping 31 matching lines @@
   bool is_embed_root_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTreeImpl);
 };
 
 }  // namespace ws
 
 }  // namespace mus
 
 #endif  // COMPONENTS_MUS_WS_WINDOW_TREE_IMPL_H_