It is time.

ui/views/widget/tooltip_manager_aura.h

-// Copyright (c) 2011 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_TOOLTIP_MANAGER_AURA_H_
-#define UI_VIEWS_WIDGET_TOOLTIP_MANAGER_AURA_H_
-
-#include "base/compiler_specific.h"
-#include "base/strings/string16.h"
-#include "ui/gfx/point.h"
-#include "ui/views/widget/tooltip_manager.h"
-
-namespace aura {
-class Window;
-}
-
-namespace gfx {
-class FontList;
-}
-
-namespace views {
-
-class Widget;
-
-// TooltipManager implementation for Aura.
-class TooltipManagerAura : public TooltipManager {
- public:
-  explicit TooltipManagerAura(Widget* widget);
-  virtual ~TooltipManagerAura();
-
-  // If |source| has capture this finds the Widget under the mouse and invokes
-  // UpdateTooltip() on it's TooltipManager. This is necessary as when capture
-  // is held mouse events are only delivered to the Window that has capture even
-  // though we may show tooltips for the Window under the mouse.
-  static void UpdateTooltipManagerForCapture(Widget* source);
-
-  // Returns the FontList used by all TooltipManagerAuras.
-  static const gfx::FontList& GetDefaultFontList();
-
-  // TooltipManager:
-  virtual const gfx::FontList& GetFontList() const override;
-  virtual void UpdateTooltip() override;
-  virtual void TooltipTextChanged(View* view) override;
-
- private:
-  View* GetViewUnderPoint(const gfx::Point& point);
-  void UpdateTooltipForTarget(View* target,
-                              const gfx::Point& point,
-                              aura::Window* root_window);
-
-  // Returns the Window the tooltip text is installed on.
-  aura::Window* GetWindow();
-
-  Widget* widget_;
-  base::string16 tooltip_text_;
-
-  DISALLOW_COPY_AND_ASSIGN(TooltipManagerAura);
-};
-
-}  // namespace views
-
-#endif  // UI_VIEWS_WIDGET_TOOLTIP_MANAGER_AURA_H_