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

services/ui/public/cpp/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_PUBLIC_CPP_WINDOW_H_
 #define SERVICES_UI_PUBLIC_CPP_WINDOW_H_
 
 #include <stdint.h>
 #include <vector>
 
@@ skipping 207 matching lines @@
              const EmbedCallback& callback,
              uint32_t flags = 0);
 
   // TODO(sky): this API is only applicable to the WindowManager. Move it
   // to a better place.
   void RequestClose();
 
   // Returns an internal name, set by a client app when it creates a window.
   std::string GetName() const;
 
+  void SetAcceptEvents(bool accept_events);

[sky, 2016/07/06 16:21:25]

nit: this is a bad location as GetName is more debugging. Maybe move by other
setter type functions, perhaps 212(ish)?

[riajiang, 2016/07/08 17:59:59]

Done.

+
  protected:
   // This class is subclassed only by test classes that provide a public ctor.
   Window();
   ~Window();
 
  private:
   friend class WindowPrivate;
   friend class WindowTreeClient;
   friend class WindowTreeClientPrivate;
 
@@ skipping 109 matching lines @@
   };
 
   std::map<const void*, Value> prop_map_;
 
   DISALLOW_COPY_AND_ASSIGN(Window);
 };
 
 }  // namespace ui
 
 #endif  // SERVICES_UI_PUBLIC_CPP_WINDOW_H_