Remove DialogDelegate::OnClosed() which is redundant with

ui/views/window/dialog_client_view.h

Index: ui/views/window/dialog_client_view.h
diff --git a/ui/views/window/dialog_client_view.h b/ui/views/window/dialog_client_view.h
index 1108904f5d519fd81f1e01b398fe39f990138a55..eab82df461b3311f681eae96f5c7456b9dec447d 100644
--- a/ui/views/window/dialog_client_view.h
+++ b/ui/views/window/dialog_client_view.h
@@ -93,9 +93,6 @@ class VIEWS_EXPORT DialogClientView : public ClientView,
   // Returns the insets for the buttons and extra view.
   gfx::Insets GetButtonRowInsets() const;
 
-  // Closes the widget.
-  void Close();
-
   // The dialog buttons.
   LabelButton* ok_button_;
   LabelButton* cancel_button_;
@@ -107,10 +104,10 @@ class VIEWS_EXPORT DialogClientView : public ClientView,
   View* footnote_view_;
 
   // True if we've notified the delegate the window is closing and the delegate
-  // allosed the close. In some situations it's possible to get two closes (see
+  // allowed the close. In some situations it's possible to get two closes (see
   // http://crbug.com/71940). This is used to avoid notifying the delegate
   // twice, which can have bad consequences.
-  bool notified_delegate_;
+  bool delegate_allowed_close_;
 
   DISALLOW_COPY_AND_ASSIGN(DialogClientView);
 };