Aura tooltips do not move on mouse move in case of many neighboring views with the same label

ui/views/corewm/tooltip_aura.h

 // Copyright 2013 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_COREWM_TOOLTIP_AURA_H_
 #define UI_VIEWS_COREWM_TOOLTIP_AURA_H_
 
 #include "ui/gfx/screen_type_delegate.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/corewm/tooltip.h"
@@ skipping 44 matching lines @@
   // Destroys |widget_|.
   void DestroyWidget();
 
   // Tooltip:
   virtual void SetText(aura::Window* window,
                        const base::string16& tooltip_text,
                        const gfx::Point& location) OVERRIDE;
   virtual void Show() OVERRIDE;
   virtual void Hide() OVERRIDE;
   virtual bool IsVisible() OVERRIDE;
+  virtual gfx::Point GetTooltipPosition() OVERRIDE;
 
   // WidgetObserver:
   virtual void OnWidgetDestroying(Widget* widget) OVERRIDE;
 
   const gfx::ScreenType screen_type_;
 
   // The label showing the tooltip.
   Label label_;
 
   // The widget containing the tooltip. May be NULL.
   Widget* widget_;
 
   // The window we're showing the tooltip for. Never NULL and valid while
   // showing.
   aura::Window* tooltip_window_;
 
   DISALLOW_COPY_AND_ASSIGN(TooltipAura);
 };
 
 }  // namespace corewm
 }  // namespace views
 
 #endif  // UI_VIEWS_COREWM_TOOLTIP_AURA_H_