OK, so I update my search preferences to make "wp" the Wikipedia key word. (I think, ok, maybe "w" was too short or something.)<p>Close the browser. Reopen. Check the options again. (Still there.) Type wp (so far so good, the Chrome hints drop-down looks like I'm going to hit Wikipedia) space, "San Francisco" (no quotes) ... and oops, the hints have changed to "Google Search" (as soon as I type the first character.