Inform window manager about modal windows in mus+ash.

services/ui/ws/window_tree.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 SERVICES_UI_WS_WINDOW_TREE_H_
 #define SERVICES_UI_WS_WINDOW_TREE_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 155 matching lines @@
   // WindowTree implementations all call into these. See the mojom for details.
   bool SetCapture(const ClientWindowId& client_window_id);
   bool ReleaseCapture(const ClientWindowId& client_window_id);
   bool NewWindow(const ClientWindowId& client_window_id,
                  const std::map<std::string, std::vector<uint8_t>>& properties);
   bool AddWindow(const ClientWindowId& parent_id,
                  const ClientWindowId& child_id);
   bool AddTransientWindow(const ClientWindowId& window_id,
                           const ClientWindowId& transient_window_id);
   bool DeleteWindow(const ClientWindowId& window_id);
-  bool SetModalType(const ClientWindowId& window_id, ModalType modal_type);
+  bool SetModalType(ServerWindow* window, ModalType modal_type);
   std::vector<const ServerWindow*> GetWindowTree(
       const ClientWindowId& window_id) const;
   bool SetWindowVisibility(const ClientWindowId& window_id, bool visible);
   bool SetWindowOpacity(const ClientWindowId& window_id, float opacity);
   bool SetFocus(const ClientWindowId& window_id);
   bool Embed(const ClientWindowId& window_id,
              mojom::WindowTreeClientPtr client,
              uint32_t flags);
   void DispatchInputEvent(ServerWindow* target, const ui::Event& event);
 
@@ skipping 395 matching lines @@
       waiting_for_top_level_window_info_;
   bool embedder_intercepts_events_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTree);
 };
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_WINDOW_TREE_H_