Revert "Fix a ton of compiler warnings."

chrome/browser/gtk/constrained_window_gtk.h

 // Copyright (c) 2009 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 CHROME_BROWSER_GTK_CONSTRAINED_WINDOW_GTK_H_
 #define CHROME_BROWSER_GTK_CONSTRAINED_WINDOW_GTK_H_
 
 #include "chrome/browser/tab_contents/constrained_window.h"
 
 #include "base/basictypes.h"
 #include "chrome/common/owned_widget_gtk.h"
 
 class TabContents;
 class TabContentsViewGtk;
 typedef struct _GtkWidget GtkWidget;
 
 class ConstrainedWindowGtkDelegate {
  public:
   // Returns the widget that will be put in the constrained window's container.
   virtual GtkWidget* GetWidgetRoot() = 0;
 
   // Tells the delegate to either delete itself or set up a task to delete
   // itself later.
   virtual void DeleteDelegate() = 0;
-
- protected:
-  ~ConstrainedWindowGtkDelegate() {}
 };
 
 // Constrained window implementation for the GTK port. Unlike the Win32 system,
 // ConstrainedWindowGtk doesn't draw draggable fake windows and instead just
 // centers the dialog. It is thus an order of magnitude simpler.
 class ConstrainedWindowGtk : public ConstrainedWindow {
  public:
   virtual ~ConstrainedWindowGtk();
 
   // Overridden from ConstrainedWindow:
@@ skipping 20 matching lines @@
   // The top level widget container that exports to our TabContentsViewGtk.
   OwnedWidgetGtk border_;
 
   // Delegate that provides the contents of this constrained window.
   ConstrainedWindowGtkDelegate* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(ConstrainedWindowGtk);
 };
 
 #endif  // CHROME_BROWSER_GTK_CONSTRAINED_WINDOW_GTK_H_