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

ui/views/corewm/tooltip_win.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_WIN_H_
 #define UI_VIEWS_COREWM_TOOLTIP_WIN_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/strings/string16.h"
@@ skipping 25 matching lines @@
   // Sets the position of the tooltip.
   void PositionTooltip();
 
   // 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;
 
   // The window |tooltip_hwnd_| is parented to.
   HWND parent_hwnd_;
 
   // Shows the tooltip.
   HWND tooltip_hwnd_;
 
   // Used to modify the tooltip.
   TOOLINFO toolinfo_;
 
   // Is the tooltip showing?
   bool showing_;
 
   // Location to show the tooltip at. In order to position the tooltip we need
   // to know the size. The size is only available from TTN_SHOW, so we have to
   // cache it.
   gfx::Point location_;
 
   DISALLOW_COPY_AND_ASSIGN(TooltipWin);
 };
 
 }  // namespace corewm
 }  // namespace views
 
 #endif  // UI_VIEWS_COREWM_TOOLTIP_WIN_H_