You may not need to perform the action in RED
Start the Chrome browser.
On the Apple menu bar, click Chrome and then select Preferences.
In the left-pane of the Settings page, do the following:
Select Extensions. If you find any suspicious extension in the list, click the Trash icon to remove it.
Select Settings. Scroll down and click Show advanced settings. From the list of advanced settings, to restore the default settings of Chrome, click Reset browser settings.
In the dialog box that appears, click Reset.