Cross Reference: /external/chromium_org/ui/webui/resources/images/2x/apps

`Name`	`Date`	`Size`
Up to higher level directory
`topbar_button_close.png`	01-Nov-2013	`241`
`topbar_button_maximize.png`	01-Nov-2013	`128`
`topbar_button_minimize.png`	01-Nov-2013	`217`
`topbar_button_settings.png`	01-Nov-2013	`402`