The updated browser is expected in February.

On top of all this, Google plans to crack down on another part of the problem: sites that misuse notifications. The company warned that it will enable "additional enforcement" against sites that use notifications for ads, malware or "deceptive purposes." More details of what that involves will have to wait until later in the year, although it has previously gone so far as to block or issue warnings for sites that run afoul of its policies. In other words, sites that insist on misusing notifications risk losing many visitors unless they shape up.