function showMetrics(inComputedStyle)
        {
            if (inComputedStyle)
                this.sidebarPanes.metrics.show(computedStylePanesWrapper.element, this.sidebarPanes.computedStyle.element);
            else
                this.sidebarPanes.metrics.show(matchedStylePanesWrapper.element);
        }
@param {boolean} inComputedStyle
@this {WebInspector.ElementsPanel}