Remove useless DesktopWindowTreeHostWin::HandleTooltipMouseMove()

ui/views/widget/desktop_aura/desktop_window_tree_host_win.h

 // Copyright (c) 2012 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_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_WIN_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_WIN_H_
 
 #include "ui/aura/window_tree_host.h"
 #include "ui/views/views_export.h"
 #include "ui/views/widget/desktop_aura/desktop_window_tree_host.h"
@@ skipping 173 matching lines @@
                                 WPARAM w_param,
                                 LPARAM l_param,
                                 LRESULT* result) OVERRIDE;
   virtual void HandleInputLanguageChange(DWORD character_set,
                                          HKL input_language_id) OVERRIDE;
   virtual bool HandlePaintAccelerated(const gfx::Rect& invalid_rect) OVERRIDE;
   virtual void HandlePaint(gfx::Canvas* canvas) OVERRIDE;
   virtual bool HandleTooltipNotify(int w_param,
                                    NMHDR* l_param,
                                    LRESULT* l_result) OVERRIDE;
-  virtual void HandleTooltipMouseMove(UINT message,
-                                      WPARAM w_param,
-                                      LPARAM l_param) OVERRIDE;
   virtual void HandleMenuLoop(bool in_menu_loop) OVERRIDE;
   virtual bool PreHandleMSG(UINT message,
                             WPARAM w_param,
                             LPARAM l_param,
                             LRESULT* result) OVERRIDE;
   virtual void PostHandleMSG(UINT message,
                              WPARAM w_param,
                              LPARAM l_param) OVERRIDE;
   virtual bool HandleScrollEvent(const ui::ScrollEvent& event) OVERRIDE;
   virtual void HandleWindowSizeChanging() OVERRIDE;
@@ skipping 59 matching lines @@
   static bool is_cursor_visible_;
 
   scoped_ptr<aura::client::ScopedTooltipDisabler> tooltip_disabler_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopWindowTreeHostWin);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_WIN_H_