Read More Microsoft aims to turn Windows into a mobile platform
Android is the dominant player among mobile operating systems, with 82.8 percent of the worldwide market as of the second quarter of this year, according to research firm IDC.
And combining Chrome and Android into one system could significantly expand the Android user base, according to the Journal.
The Chrome operating system will not be "killed," however, according to a Google spokesperson. The Chrome and Android teams will be working closely together on a more consistent user experience across Chromebooks, tablets and smartphones, the spokesperson said in a phone interview.