Disables tooltips if we can't create the tooltip window. I still don't

views/widget/aero_tooltip_manager.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_AERO_TOOLTIP_MANAGER_H_
 #define VIEWS_WIDGET_AERO_TOOLTIP_MANAGER_H_
 #pragma once
 
 #include "base/memory/ref_counted.h"
 #include "base/task.h"
@@ skipping 17 matching lines @@
 //
 // TODO(glen): Resolve this with Microsoft.
 class AeroTooltipManager : public TooltipManagerWin {
  public:
   explicit AeroTooltipManager(Widget* widget);
   virtual ~AeroTooltipManager();
 
   virtual void OnMouse(UINT u_msg, WPARAM w_param, LPARAM l_param);
 
  private:
-  void Init();
   void OnTimer();
 
   class InitialTimer : public base::RefCounted<InitialTimer> {
    public:
     explicit InitialTimer(AeroTooltipManager* manager);
     void Start(int time);
     void Disown();
     void Execute();
 
    private:
     friend class base::RefCounted<InitialTimer>;
 
     ~InitialTimer() {}
 
     AeroTooltipManager* manager_;
   };
 
   int initial_delay_;
   scoped_refptr<InitialTimer> initial_timer_;
 };
 
 }  // namespace views
 
 #endif  // #ifndef VIEWS_WIDGET_AERO_TOOLTIP_MANAGER_H_