Remove DialogDelegate::OnClosed() which is redundant with

components/app_modal/views/javascript_app_modal_dialog_views.cc

Index: components/app_modal/views/javascript_app_modal_dialog_views.cc
diff --git a/components/app_modal/views/javascript_app_modal_dialog_views.cc b/components/app_modal/views/javascript_app_modal_dialog_views.cc
index b45ccbd6633ad27e042f5c01e6e956b6bae4b790..9823f8af7d582f8d75a40f61d2e75c8c2f6f205c 100644
--- a/components/app_modal/views/javascript_app_modal_dialog_views.cc
+++ b/components/app_modal/views/javascript_app_modal_dialog_views.cc
@@ -111,10 +111,6 @@ bool JavaScriptAppModalDialogViews::Accept() {
   return true;
 }
 
-void JavaScriptAppModalDialogViews::OnClosed() {
-  parent_->OnClose();
-}
-
 views::Widget* JavaScriptAppModalDialogViews::GetWidget() {

[msw, 2016/02/11 18:08:58]

nit: reorder these GetWidget impls too, please.

[Evan Stade, 2016/02/11 20:02:11]

Done.

   return message_box_view_->GetWidget();
 }
@@ -158,4 +154,8 @@ views::View* JavaScriptAppModalDialogViews::GetInitiallyFocusedView() {
   return views::DialogDelegate::GetInitiallyFocusedView();
 }
 
+void JavaScriptAppModalDialogViews::WindowClosing() {
+  parent_->OnClose();
+}
+
 }  // namespace app_modal