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

`Name`	`Date`	`Size`
Up to higher level directory
`button_butter_bar_close.png`	23-Apr-2015	`108`
`button_butter_bar_close_hover.png`	23-Apr-2015	`112`
`button_butter_bar_close_pressed.png`	23-Apr-2015	`115`
`topbar_button_close.png`	23-Apr-2015	`174`
`topbar_button_maximize.png`	23-Apr-2015	`103`
`topbar_button_minimize.png`	23-Apr-2015	`96`
`topbar_button_settings.png`	23-Apr-2015	`220`

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