It is time.

ui/views/test/x11_property_change_waiter.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_VIEWS_TEST_X11_PROPERTY_CHANGE_WAITER_H_
-#define UI_VIEWS_TEST_X11_PROPERTY_CHANGE_WAITER_H_
-
-#include "base/callback.h"
-#include "base/memory/scoped_ptr.h"
-#include "ui/events/platform/platform_event_dispatcher.h"
-#include "ui/events/platform/platform_event_types.h"
-#include "ui/gfx/x/x11_types.h"
-
-namespace ui {
-class ScopedEventDispatcher;
-class X11AtomCache;
-}
-
-namespace views {
-
-// Blocks till the value of |property| on |window| changes.
-class X11PropertyChangeWaiter : public ui::PlatformEventDispatcher {
- public:
-  X11PropertyChangeWaiter(XID window, const char* property);
-  virtual ~X11PropertyChangeWaiter();
-
-  // Blocks till the value of |property_| changes.
-  virtual void Wait();
-
- protected:
-  // Returns whether the run loop can exit.
-  virtual bool ShouldKeepOnWaiting(const ui::PlatformEvent& event);
-
-  XID xwindow() const {
-    return x_window_;
-  }
-
- private:
-  // ui::PlatformEventDispatcher:
-  virtual bool CanDispatchEvent(const ui::PlatformEvent& event) override;
-  virtual uint32_t DispatchEvent(const ui::PlatformEvent& event) override;
-
-  XID x_window_;
-  const char* property_;
-
-  // Whether Wait() should block.
-  bool wait_;
-
-  // Ends the run loop.
-  base::Closure quit_closure_;
-
-  // The event mask to be restored upon X11PropertyChangeWaiter's destruction.
-  long old_event_mask_;
-
-  scoped_ptr<ui::ScopedEventDispatcher> dispatcher_;
-
-  scoped_ptr<ui::X11AtomCache> atom_cache_;
-
-  DISALLOW_COPY_AND_ASSIGN(X11PropertyChangeWaiter);
-};
-
-}  // namespace views
-
-#endif  // UI_VIEWS_TEST_X11_PROPERTY_CHANGE_WAITER_H_