Fix a bug that volumeType is called as a method.

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

Index: ui/file_manager/file_manager/foreground/js/file_manager.js
diff --git a/ui/file_manager/file_manager/foreground/js/file_manager.js b/ui/file_manager/file_manager/foreground/js/file_manager.js
index b3cbf399810cb7e22c0d4c60d1455e3d028f4451..4083d1d626e02989ca0c34098847796ab4a67959 100644
--- a/ui/file_manager/file_manager/foreground/js/file_manager.js
+++ b/ui/file_manager/file_manager/foreground/js/file_manager.js
@@ -869,7 +869,7 @@ FileManager.prototype = /** @struct */ {
             // NOTE: That dynamic values, like volume name MUST NOT
             // be sent to GA as that value can contain PII.
             // VolumeType is an enum.
-            this.tracker_.sendAppView(volumeInfo.volumeType());
+            this.tracker_.sendAppView(volumeInfo.volumeType);
           }
         }.bind(this));