[quickview] Variable name change

|deleteMenuItem| changed to |deleteCommand|.

Bug: 803259
Change-Id: Iceeb2ef11c1b74a2c4cf723dc7279e3fc26ae456
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2032624Reviewed-by: Noel Gordon <noel@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Commit-Queue: Rachel Sugrono <rsugrono@google.com>
Cr-Commit-Position: refs/heads/master@{#737165}

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

@@ -282,9 +282,9 @@ class QuickViewController {
     }
 
     // Delete the entry.
-    const deleteMenuItem = CommandHandler.getCommand('delete');
-    if (deleteMenuItem.canDeleteEntries_([entry], this.fileManager_)) {
-      deleteMenuItem.deleteEntries_(
+    const deleteCommand = CommandHandler.getCommand('delete');
+    if (deleteCommand.canDeleteEntries_([entry], this.fileManager_)) {
+      deleteCommand.deleteEntries_(
           [entry], this.fileManager_, this.deleteConfirmDialog_);
     }
   }