If the URL of a displayed page has a query string, our icon is in the omnibox. Click to reload the page without the query string.
If the URL of a displayed page has a query string, our icon is in the omnibox. Click it to reload the page without the query string. This is just a shortcut utility for when you want to accomplish this so that you don't have to manually go through this process. Use cases include when following a link from a feed that causes a pre-roll ad before you can watch a video. In many cases, the notification to show you the ad comes from the query parameters. If you reload the page without them, you see the video with no ad.
There are many times when you may like to reload the page without query parameters. This just makes that process slightly easier and slightly quicker.