Wires up modality for aura-mus

ui/aura/mus/window_tree_client.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 UI_AURA_MUS_WINDOW_TREE_CLIENT_H_
 #define UI_AURA_MUS_WINDOW_TREE_CLIENT_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 229 matching lines @@
   WindowMus* NewWindowFromWindowData(
       WindowMus* parent,
       const ui::mojom::WindowDataPtr& window_data);
 
   // Sets the ui::mojom::WindowTree implementation.
   void SetWindowTree(ui::mojom::WindowTreePtr window_tree_ptr);
 
   // Called when the ui::mojom::WindowTree connection is lost, deletes this.
   void OnConnectionLost();
 
+  // Called when a Window property changes. If |key| is handled internally
+  // (maps to a function on WindowTree) returns true.
+  bool HandleInternalPropertyChanged(WindowMus* window, const void* key);
+
   // OnEmbed() calls into this. Exposed as a separate function for testing.
   void OnEmbedImpl(ui::mojom::WindowTree* window_tree,
                    ClientSpecificId client_id,
                    ui::mojom::WindowDataPtr root_data,
                    int64_t display_id,
                    Id focused_window_id,
                    bool drawn);
 
   // Called by WmNewDisplayAdded().
   WindowTreeHost* WmNewDisplayAddedImpl(const display::Display& display,
@@ skipping 250 matching lines @@
   std::set<Id> drag_entered_windows_;
 
   base::WeakPtrFactory<WindowTreeClient> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTreeClient);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_MUS_WINDOW_TREE_CLIENT_H_