Google Chrome prior to 54.0.2840.85 for Android incorrectly handled rapid transition into and out of full screen mode, which allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via crafted HTML pages.
https://security.gentoo.org/glsa/201610-09
https://chromereleases.googleblog.com/2016/10/stable-channel-update-for-desktop.html