mus: Disregard windows that explicitly set can_accept_events to be false when sending events.

services/ui/ws/server_window.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_SERVER_WINDOW_H_
 #define SERVICES_UI_WS_SERVER_WINDOW_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 133 matching lines @@
   std::string GetName() const;
 
   void SetTextInputState(const ui::TextInputState& state);
   const ui::TextInputState& text_input_state() const {
     return text_input_state_;
   }
 
   void set_can_focus(bool can_focus) { can_focus_ = can_focus; }
   bool can_focus() const { return can_focus_; }
 
+  void set_can_accept_events(bool can_accept_events) {
+    can_accept_events_ = can_accept_events;
+  }
+  bool can_accept_events() const { return can_accept_events_; }
+
   // Returns true if this window is attached to a root and all ancestors are
   // visible.
   bool IsDrawn() const;
 
   // Called when its appropriate to destroy surfaces scheduled for destruction.
   void DestroySurfacesScheduledForDestruction();
 
   const gfx::Insets& extended_hit_test_region() const {
     return extended_hit_test_region_;
   }
@@ skipping 52 matching lines @@
   gfx::Rect bounds_;
   gfx::Insets client_area_;
   std::vector<gfx::Rect> additional_client_areas_;
   std::unique_ptr<ServerWindowSurfaceManager> surface_manager_;
   mojom::Cursor cursor_id_;
   mojom::Cursor non_client_cursor_id_;
   float opacity_;
   bool can_focus_;
   gfx::Transform transform_;
   ui::TextInputState text_input_state_;
+  bool can_accept_events_;
 
   Properties properties_;
 
   gfx::Vector2d underlay_offset_;
 
   // The hit test for windows extends outside the bounds of the window by this
   // amount.
   gfx::Insets extended_hit_test_region_;
 
   // Mouse events outside the hit test mask don't hit the window. An empty mask
   // means all events miss the window. If null there is no mask.
   std::unique_ptr<gfx::Rect> hit_test_mask_;
 
   base::ObserverList<ServerWindowObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(ServerWindow);
 };
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_SERVER_WINDOW_H_