Remove DialogDelegate::Accept() variant

ui/views/window/dialog_delegate.cc

Index: ui/views/window/dialog_delegate.cc
diff --git a/ui/views/window/dialog_delegate.cc b/ui/views/window/dialog_delegate.cc
index a7305d282a8b75c48a015766495955e98701bba2..f74f5a1cf268a38f12d6980ab911fd7b571b0a76 100644
--- a/ui/views/window/dialog_delegate.cc
+++ b/ui/views/window/dialog_delegate.cc
@@ -102,10 +102,6 @@ bool DialogDelegate::Cancel() {
   return true;
 }
 
-bool DialogDelegate::Accept(bool window_closing) {
-  return Accept();
-}
-
 bool DialogDelegate::Accept() {
   return true;
 }
@@ -116,7 +112,7 @@ bool DialogDelegate::Close() {
       (buttons == ui::DIALOG_BUTTON_NONE)) {
     return Cancel();
   }
-  return Accept(true);
+  return Accept();
 }
 
 base::string16 DialogDelegate::GetDialogTitle() const {