function Panel($panel, minSize) {
        this.$panel = $panel;

        Resizer.makeResizable($panel[0], Resizer.DIRECTION_VERTICAL, Resizer.POSITION_TOP, minSize, false, undefined, true);
        listenToResize($panel);
    }
Represents a panel below the editor area (a child of ".content").
@constructor
@param {!jQueryObject} $panel  The entire panel, including any chrome, already in the DOM.
@param {number=} minSize  Minimum height of panel in px.