Revert of Remove DialogDelegate::OnClosed() which is redundant with

chrome/browser/chromeos/enrollment_dialog_view.cc

Index: chrome/browser/chromeos/enrollment_dialog_view.cc
diff --git a/chrome/browser/chromeos/enrollment_dialog_view.cc b/chrome/browser/chromeos/enrollment_dialog_view.cc
index f5ec1fd70191656989f659f62a70d1de2fc13579..5e635f491aeb19e882c99d35a33fc756116e1513 100644
--- a/chrome/browser/chromeos/enrollment_dialog_view.cc
+++ b/chrome/browser/chromeos/enrollment_dialog_view.cc
@@ -53,12 +53,12 @@
   // views::DialogDelegateView overrides
   int GetDialogButtons() const override;
   bool Accept() override;
+  void OnClosed() override;
   base::string16 GetDialogButtonLabel(ui::DialogButton button) const override;
 
   // views::WidgetDelegate overrides
   ui::ModalType GetModalType() const override;
   base::string16 GetWindowTitle() const override;
-  void WindowClosing() override;
 
   // views::View overrides
   gfx::Size GetPreferredSize() const override;
@@ -120,6 +120,17 @@
   return true;
 }
 
+void EnrollmentDialogView::OnClosed() {
+  if (!accepted_)
+    return;
+  chrome::NavigateParams params(profile_,
+                                GURL(target_uri_),
+                                ui::PAGE_TRANSITION_LINK);
+  params.disposition = NEW_FOREGROUND_TAB;
+  params.window_action = chrome::NavigateParams::SHOW_WINDOW;
+  chrome::Navigate(&params);
+}
+
 base::string16 EnrollmentDialogView::GetDialogButtonLabel(
     ui::DialogButton button) const {
   if (button == ui::DIALOG_BUTTON_OK)
@@ -133,16 +144,6 @@
 
 base::string16 EnrollmentDialogView::GetWindowTitle() const {
   return l10n_util::GetStringUTF16(IDS_NETWORK_ENROLLMENT_HANDLER_TITLE);
-}
-
-void EnrollmentDialogView::WindowClosing() {
-  if (!accepted_)
-    return;
-  chrome::NavigateParams params(profile_, GURL(target_uri_),
-                                ui::PAGE_TRANSITION_LINK);
-  params.disposition = NEW_FOREGROUND_TAB;
-  params.window_action = chrome::NavigateParams::SHOW_WINDOW;
-  chrome::Navigate(&params);
 }
 
 gfx::Size EnrollmentDialogView::GetPreferredSize() const {