Use a uniform opaque type to represent web contents modal dialogs

chrome/browser/ui/gtk/constrained_window_gtk.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 CHROME_BROWSER_UI_GTK_CONSTRAINED_WINDOW_GTK_H_
 #define CHROME_BROWSER_UI_GTK_CONSTRAINED_WINDOW_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include "base/basictypes.h"
@@ skipping 41 matching lines @@
 
   ConstrainedWindowGtk(content::WebContents* web_contents,
                        ConstrainedWindowGtkDelegate* delegate);
   virtual ~ConstrainedWindowGtk();
 
   // Overridden from WebContentsModalDialog:
   virtual void ShowWebContentsModalDialog() OVERRIDE;
   virtual void CloseWebContentsModalDialog() OVERRIDE;
   virtual void FocusWebContentsModalDialog() OVERRIDE;
   virtual void PulseWebContentsModalDialog() OVERRIDE;
-  virtual gfx::NativeWindow GetNativeWindow() OVERRIDE;
+  virtual NativeWebContentsModalDialog GetNativeDialog() OVERRIDE;
 
   // Called when the result of GetBackgroundColor may have changed.
   void BackgroundColorChanged();
 
   // Returns the WebContents that constrains this Constrained Window.
   content::WebContents* owner() const { return web_contents_; }
 
   // Returns the toplevel widget that displays this "window".
   GtkWidget* widget() { return border_.get(); }
 
@@ skipping 20 matching lines @@
 
   // Stores if |ShowWebContentsModalDialog()| has been called.
   bool visible_;
 
   base::WeakPtrFactory<ConstrainedWindowGtk> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ConstrainedWindowGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_CONSTRAINED_WINDOW_GTK_H_