Index: ui/file_manager/file_manager/foreground/js/ui/progress_center_panel.js |
diff --git a/ui/file_manager/file_manager/foreground/js/ui/progress_center_panel.js b/ui/file_manager/file_manager/foreground/js/ui/progress_center_panel.js |
index 94de1f4100d9b461a5de7f4c8aacc64a4cce9e86..6aa896dfaef080cd114289ba1f2272ed9696dd8e 100644 |
--- a/ui/file_manager/file_manager/foreground/js/ui/progress_center_panel.js |
+++ b/ui/file_manager/file_manager/foreground/js/ui/progress_center_panel.js |
@@ -179,10 +179,12 @@ function ProgressCenterPanel(element) { |
/** |
* Open view containing multiple progress items. |
- * @type {Element} |
+ * @type {!HTMLDivElement} |
* @private |
*/ |
- this.openView_ = this.element_.querySelector('#progress-center-open-view'); |
+ this.openView_ = assertInstanceof( |
+ queryRequiredElement(this.element_, '#progress-center-open-view'), |
+ HTMLDivElement); |
/** |
* Close view that is a summarized progress item. |