Ensure proper teardown of repost form warning objects.

chrome/browser/repost_form_warning_controller.h

Index: chrome/browser/repost_form_warning_controller.h
diff --git a/chrome/browser/repost_form_warning_controller.h b/chrome/browser/repost_form_warning_controller.h
index 2b2c0a81042b0b7414b58b06d6d0e0010aac0955..ce22d7becb169a29d2f7361ab2a803038376af7a 100644
--- a/chrome/browser/repost_form_warning_controller.h
+++ b/chrome/browser/repost_form_warning_controller.h
@@ -13,11 +13,11 @@ class TabContents;
 
 // This class is used to continue or cancel a pending reload when the
 // repost form warning is shown. It is owned by the platform-dependent
-// |RepostFormWarning{Gtk,Mac,View}| classes and deletes itself after closing
-// the dialog.
+// |RepostFormWarning{Gtk,Mac,View}| classes.
 class RepostFormWarningController : public NotificationObserver {
  public:
   explicit RepostFormWarningController(TabContents* tab_contents);
+  virtual ~RepostFormWarningController();
 
   // Show the warning dialog.
   void Show(ConstrainedWindowDelegate* window_delegate);
@@ -29,8 +29,6 @@ class RepostFormWarningController : public NotificationObserver {
   void Continue();
 
  private:
-  virtual ~RepostFormWarningController();
-
   // NotificationObserver implementation.
   // Watch for a new load or a closed tab and dismiss the dialog if they occur.
   void Observe(NotificationType type,