Make close button visible when focusing inline actions.

ui/message_center/views/notification_view.cc

Index: ui/message_center/views/notification_view.cc
diff --git a/ui/message_center/views/notification_view.cc b/ui/message_center/views/notification_view.cc
index f65b597fa179a0609ae16f47e6329e25f75ce73b..da0e9a2239a2fc600277c98ad93daa59ec8ea6ea 100644
--- a/ui/message_center/views/notification_view.cc
+++ b/ui/message_center/views/notification_view.cc
@@ -708,10 +708,7 @@ void NotificationView::CreateOrUpdateCloseButtonView(
 }
 
 void NotificationView::UpdateControlButtonsVisibility() {
-  const bool target_visibility =
-      IsMouseHovered() || HasFocus() ||
-      (close_button_ && close_button_->HasFocus()) ||
-      (settings_button_view_ && settings_button_view_->HasFocus());
+  const bool target_visibility = IsMouseHovered() || HasFocusedView();
 
   if (close_button_) {
     if (target_visibility != close_button_->visible())
@@ -765,4 +762,9 @@ int NotificationView::GetMessageHeight(int width, int limit) const {
          message_view_->GetSizeForWidthAndLines(width, limit).height() : 0;
 }
 
+bool NotificationView::HasFocusedView() {
+  const views::FocusManager* focus_manager = GetFocusManager();
+  return focus_manager && Contains(focus_manager->GetFocusedView());
+}
+
 }  // namespace message_center