Feb 22 (Reuters) - Alphabet Inc:* GOOGLE CANADA - BRIEFLY TESTING POTENTIAL PRODUCT RESPONSES TO CANADA'S BILL C-18 THAT IMPACT VERY SMALL PERCENTAGE OF CANADIAN USERS* GOOGLE CANADA - HAVE BEEN FULLY TRANSPARENT ABOUT CONCERN THAT C-18 IS OVERLY BROAD AND, IF UNCHANGED, COULD IMPACT PRODUCTS CANADIANS USE Further company coverage: