mus: Server-side implementation of modal windows

components/mus/ws/display.h

 // 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.
 
 #ifndef COMPONENTS_MUS_WS_DISPLAY_H_
 #define COMPONENTS_MUS_WS_DISPLAY_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 102 matching lines @@
     return const_cast<WindowManagerState*>(
         const_cast<const Display*>(this)->GetWindowManagerStateForUser(
             user_id));
   }
   const WindowManagerState* GetWindowManagerStateForUser(
       const UserId& user_id) const;
   size_t num_window_manger_states() const {
     return window_manager_state_map_.size();
   }
 
-  void SetCapture(ServerWindow* window, bool in_nonclient_area);
+  bool SetCapture(ServerWindow* window, bool in_nonclient_area);
+  void ReleaseCaptureForModalWindow(ServerWindow* window);

[sky, 2016/03/08 17:07:53]

It isn't particularly clear what this does from the name. Please add a
description.

[mohsen, 2016/03/09 08:26:48]

Done. Also, renamed the function as I needed to add another function with
similar functionality.

 
   void SetFocusedWindow(ServerWindow* window);
   ServerWindow* GetFocusedWindow();
   void DestroyFocusController();
   FocusController* focus_controller() { return focus_controller_.get(); }
 
   void AddActivationParent(ServerWindow* window);
   void RemoveActivationParent(ServerWindow* window);
 
   void UpdateTextInputState(ServerWindow* window,
@@ skipping 145 matching lines @@
 
   WindowManagerStateMap window_manager_state_map_;
 
   DISALLOW_COPY_AND_ASSIGN(Display);
 };
 
 }  // namespace ws
 }  // namespace mus
 
 #endif  // COMPONENTS_MUS_WS_DISPLAY_H_