Maximizing webview/hiding titlebar

How do I maximize a webView to take the whole screen? Or How do I hide the title bar?

So I have

<statusbar-hidden>true</statusbar-hidden>
    <fullscreen>true</fullscreen>
    <navbar-hidden>true</navbar-hidden>

in TiApp

and

var titleBarOn = false;
...
...
        tabBarHidden : true,
            fullscreen : true,
        navBarHidden : true,
        title: '',
...

in ApplicationWindow just to make sure it's hidden. And I still get this (I'll provide a link because the image itself is huge for this tiny place). http://i.imgur.com/XSJgQAC.png

The icon and the gray bar, how do I get rid of it? I've searched around and haven't found any answers. I've also downloaded some open source apps and turns out all of them had the title bar visible..

Any help is appreciated.