Suggest you first try to figure out whether these nuisances are being caused by Chrome. You could use another browser, Safari or Firefox for example, and check if the problems continue. If Chrome is the cause, yu can uninstall Chrome:
Close all web browsers. Does the problem continue? If not, the problem was caused by a page that was loaded. Try to narrow down which page is causing the problem.
If it continues with all browsers closed, you probably have a web clipping open in the Dashboard that is causing the problem. Open your Dashboard and remove any web clipping widgets.
This is not caused by malware of any kind.