Fix an event name typo in toolbar_controller.js

BUG=None
TEST=manual, the callback is now called

Change-Id: I24c2af2f154ef903667ebdedff6f8e436d01ae93
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1612514
Commit-Queue: Luciano Pacheco <lucmult@chromium.org>
Reviewed-by: Luciano Pacheco <lucmult@chromium.org>
Cr-Commit-Position: refs/heads/master@{#659783}

ui/file_manager/file_manager/foreground/js/toolbar_controller.js

@@ -114,7 +114,7 @@ class ToolbarController {
         'relayout', this.onNavigationListRelayout_.bind(this));
 
     this.directoryModel_.addEventListener(
-        'directory-change', this.updateCurrentDirectoryButtons_.bind(this));
+        'directory-changed', this.updateCurrentDirectoryButtons_.bind(this));
 
     // Watch visibility of toolbar buttons to update the width of location line.
     const observer =