It looks like Google is either going to hobble the Chrome Web Store or (more likely) help Google Checkout. The company's announced that developers who intend to use Chrome Web Store Payments to charge for apps must have Checkout accounts. That's a big step, considering the degree to which Google Checkout has failed to catch on. By pairing it with the Chrome Web Store, Google's shown that it's not ready to just cede the market to PayPal.