"In BleachBit 0.8.5, Google Chrome and Chromium will lose the
factory search engine (Google, Yahoo, Bing) if you choose the
History option, so you cannot search from the Omnibox. This is
fixed for BleachBit 0.8.6 (due soon). This feature was included in
"History" because as you browse to certain sites (such as CNN.com),
the browser will quietly add search engines to a list, and the list
becomes a partial history of your usage on the Internet."