Address post-submit comments from http://codereview.chromium.org/327009 .

chrome/browser/gtk/repost_form_warning_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_REPOST_FORM_WARNING_GTK_H_
 #define CHROME_BROWSER_GTK_REPOST_FORM_WARNING_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include "chrome/common/notification_registrar.h"
 
 class NavigationController;
 
+// Displays a dialog that warns the user that they are about to resubmit a form.
+// To display the dialog, allocate this object on the heap. It will open the
+// dialog from its constructor and then delete itself when the user dismisses
+// the dialog.
 class RepostFormWarningGtk : public NotificationObserver {
  public:
   RepostFormWarningGtk(GtkWindow* parent,
                        NavigationController* navigation_controller);
   virtual ~RepostFormWarningGtk();
 
  private:
   // NotificationObserver implementation.
   // Watch for a new load or a closed tab and dismiss the dialog if they occur.
   virtual void Observe(NotificationType type,
@@ skipping 13 matching lines @@
 
   // Navigation controller, used to continue the reload.
   NavigationController* navigation_controller_;
 
   GtkWidget* dialog_;
 
   DISALLOW_COPY_AND_ASSIGN(RepostFormWarningGtk);
 };
 
 #endif  // CHROME_BROWSER_GTK_REPOST_FORM_WARNING_GTK_H_