function doneCallback()
        {
            for (var url in urlToNoDimensionCount) {
                var entry = entry || result.addChild(WebInspector.UIString("A width and height should be specified for all images in order to speed up page display. The following image(s) are missing a width and/or height:"), true);
                var format = "%r";
                if (urlToNoDimensionCount[url] > 1)
                    format += " (%d uses)";
                entry.addFormatted(format, url, urlToNoDimensionCount[url]);
                result.violationCount++;
            }
            callback(entry ? result : null);
        }
@override
@param {!WebInspector.Target} target
@param {!Array.<!WebInspector.NetworkRequest>} requests
@param {!WebInspector.AuditRuleResult} result
@param {function(?WebInspector.AuditRuleResult)} callback
@param {!WebInspector.Progress} progress