aura: Update how the tooltip manager works.

views/widget/tooltip_manager_views.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 VIEWS_WIDGET_TOOLTIP_MANAGER_VIEWS_H_
 #define VIEWS_WIDGET_TOOLTIP_MANAGER_VIEWS_H_
 #pragma once
 
 #include "base/message_loop.h"
 #include "base/timer.h"
 #include "views/controls/label.h"
 #include "views/widget/native_widget.h"
 #include "views/widget/tooltip_manager.h"
 #include "views/widget/widget_delegate.h"
 #include "views/view.h"
 
 #if defined(USE_X11)
 typedef union _XEvent XEvent;
 namespace ui {
 union WaylandEvent;
 }
 #endif
 
 namespace views {
 
+class MouseEvent;
 class Widget;
 
 // TooltipManager implementation for Views.
-class TooltipManagerViews : public TooltipManager,
-                            public MessageLoopForUI::Observer {
+class TooltipManagerViews : public TooltipManager {
  public:
   explicit TooltipManagerViews(views::View* root_view);
   virtual ~TooltipManagerViews();
 
+  // Updates the state of the tooltip based on the mouse event. The mouse event
+  // is the same event that goes to a Widget (i.e. it is in the Widget's
+  // coordinate system).
+  void UpdateForMouseEvent(const MouseEvent& event);
+
   // TooltipManager.
   virtual void UpdateTooltip() OVERRIDE;
   virtual void TooltipTextChanged(View* view) OVERRIDE;
   virtual void ShowKeyboardTooltip(View* view) OVERRIDE;
   virtual void HideKeyboardTooltip() OVERRIDE;
 
-#if defined(USE_WAYLAND)
-  virtual base::MessagePumpObserver::EventStatus WillProcessEvent(
-      ui::WaylandEvent* event) OVERRIDE;
-#else
-  // MessageLoopForUI::Observer
-  virtual base::EventStatus WillProcessEvent(
-      const base::NativeEvent& event) OVERRIDE;
-  virtual void DidProcessEvent(const base::NativeEvent& event) OVERRIDE;
-#endif
-
  private:
   void TooltipTimerFired();
   View* GetViewForTooltip(int x, int y, bool for_keyboard);
 
   // Updates the tooltip if required (if there is any change in the tooltip
   // text or the view.
   void UpdateIfRequired(int x, int y, bool for_keyboard);
 
   // Updates the tooltip. Gets the tooltip text from tooltip_view_ and displays
   // it at the current mouse position.
@@ skipping 18 matching lines @@
 
   gfx::Point curr_mouse_pos_;
   base::RepeatingTimer<TooltipManagerViews> tooltip_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(TooltipManagerViews);
 };
 
 }  // namespace views
 
 #endif // VIEWS_WIDGET_TOOLTIP_MANAGER_VIEWS_H_