Fixes crash in ~WidgetGtk. This was caused by your change to no longer...

views/widget/widget_win.h

 // Copyright (c) 2006-2008 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_WIDGET_WIN_H_
 #define VIEWS_WIDGET_WIDGET_WIN_H_
 
 #include <atlbase.h>
 #include <atlapp.h>
 #include <atlcrack.h>
@@ skipping 498 matching lines @@
 
   // Creates the RootView to be used within this Widget. Can be overridden to
   // create specialized RootView implementations.
   virtual RootView* CreateRootView();
 
   // Returns true if this WidgetWin is opaque.
   bool opaque() const { return opaque_; }
 
   // The TooltipManager.
   // WARNING: RootView's destructor calls into the TooltipManager. As such, this
-  // must be destroyed AFTER root_view_. This really only matters during
-  // WM_SESSIONEND, as normally the hwnd is destroyed which tiggers unsetting
-  // the widget in the RootView so that RootView's destructor doesn't call into
-  // the TooltipManager.
+  // must be destroyed AFTER root_view_.
   scoped_ptr<TooltipManagerWin> tooltip_manager_;
 
   // The focus manager keeping track of focus for this Widget and any of its
   // children.  NULL for non top-level widgets.
   // WARNING: RootView's destructor calls into the FocusManager. As such, this
   // must be destroyed AFTER root_view_.
   scoped_ptr<FocusManager> focus_manager_;
 
   // The root of the View hierarchy attached to this window.
   // WARNING: see warning in tooltip_manager_ for ordering dependencies with
@@ skipping 109 matching lines @@
 
   scoped_ptr<DefaultThemeProvider> default_theme_provider_;
 
   // Our hwnd.
   HWND hwnd_;
 };
 
 }  // namespace views
 
 #endif  // #ifndef VIEWS_WIDGET_WIDGET_WIN_H_