Do not focus any buttons in the relaunch required dialog.

To prevent users from accidentally restarting or dismissing the dialog
if they happen to be typing when it appears.

BUG=884831
R=bsep@chromium.org

Change-Id: I91c31bd5b122632a3a2ceb13214aac266dfc6020
Reviewed-on: https://chromium-review.googlesource.com/1233576Reviewed-by: Bret Sepulveda <bsep@chromium.org>
Commit-Queue: Greg Thompson <grt@chromium.org>
Cr-Commit-Position: refs/heads/master@{#592473}

chrome/browser/ui/views/relaunch_notification/relaunch_required_dialog_view.cc

@@ -71,6 +71,12 @@ bool RelaunchRequiredDialogView::Close() {
   return true;
 }
 
+int RelaunchRequiredDialogView::GetDefaultDialogButton() const {
+  // Do not focus either button so that the user doesn't relaunch or dismiss by
+  // accident if typing when the dialog appears.
+  return ui::DIALOG_BUTTON_NONE;
+}
+
 base::string16 RelaunchRequiredDialogView::GetDialogButtonLabel(
     ui::DialogButton button) const {
   return l10n_util::GetStringUTF16(button == ui::DIALOG_BUTTON_OK

chrome/browser/ui/views/relaunch_notification/relaunch_required_dialog_view.h

@@ -41,6 +41,7 @@ class RelaunchRequiredDialogView : views::DialogDelegateView {
   // views::DialogDelegateView:
   bool Accept() override;
   bool Close() override;
+  int GetDefaultDialogButton() const override;
   base::string16 GetDialogButtonLabel(ui::DialogButton button) const override;
   ui::ModalType GetModalType() const override;
   base::string16 GetWindowTitle() const override;