Missing Add-Ons button on Menu Bar

If you ever see that the Add-Ons button on the menu bar is gone you can get that button back by clearing the cache and cookies.

Here's how:

In Chrome

On your computer, open Chrome.
At the top right, click More .
Click More tools Clear browsing data.
At the top, choose a time range. To delete everything, select All time.
Next to "Cookies and other site data" and "Cached images and files," check the boxes.
Click Clear data.