guys, already said... install Firefox and then the full screen mobile add on.
when you long press a page there is a menu ... it has some bugs... eg when you leave the app and come back you have to reenter full screen. but besides that it does what you want.
Sent from my XT1053 using XDA Free mobile app
edit, OK just noticed it does not remove the bottom buttons... they just become dots... not sure i like that way more or less... i think i like having access to home and back buttons at all times
Moto X, buyer remorse, stock.
nexus one, buyer remorse. cm7.1
hp touchpad, pure awesomeness. cm9 nightly + stock webOS
alcatel touch one fire. firefoxOS from source every slow weekend or so.