X11: Remove calls to XSelectInput

ui/views/widget/desktop_aura/x11_desktop_handler.h

 // Copyright (c) 2012 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_VIEWS_WIDGET_DESKTOP_AURA_X11_DESKTOP_HANDLER_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_X11_DESKTOP_HANDLER_H_
 
 #include <stdint.h>
 #include <X11/Xlib.h>
 // Get rid of a macro from Xlib.h that conflicts with Aura's RootWindow class.
 #undef RootWindow
 
 #include <vector>
 
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "ui/aura/env_observer.h"
 #include "ui/events/platform/platform_event_dispatcher.h"
 #include "ui/events/platform/x11/x11_event_source.h"
 #include "ui/gfx/x/x11_atom_cache.h"
 #include "ui/gfx/x/x11_types.h"
 #include "ui/views/views_export.h"
 #include "ui/views/widget/desktop_aura/x11_desktop_handler_observer.h"
 
 namespace base {
 template <typename T> struct DefaultSingletonTraits;
 }
 
+namespace ui {
+class XScopedEventSelector;
+}
+
 namespace views {
 
 // A singleton that owns global objects related to the desktop and listens for
 // X11 events on the X11 root window. Destroys itself when aura::Env is
 // deleted.
 class VIEWS_EXPORT X11DesktopHandler : public ui::PlatformEventDispatcher,
                                        public aura::EnvObserver {
  public:
   // Returns the singleton handler.
   static X11DesktopHandler* get();
@@ skipping 23 matching lines @@
 
   // Makes a round trip to the X server to get the current workspace.
   bool UpdateWorkspace();
 
   // The display and the native X window hosting the root window.
   XDisplay* xdisplay_;
 
   // The native root window.
   ::Window x_root_window_;
 
+  // Events selected on x_root_window_.
+  std::unique_ptr<ui::XScopedEventSelector> x_root_window_events_;
+
   ui::X11AtomCache atom_cache_;
 
   base::ObserverList<X11DesktopHandlerObserver> observers_;
 
   std::string workspace_;
 
   DISALLOW_COPY_AND_ASSIGN(X11DesktopHandler);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_X11_DESKTOP_HANDLER_H_