code: function _makeCSSTarget(targets, rule) {
          if (rule.sourceURL) {
              var url = rule.sourceURL;
              url += ":" + rule.style.range.start;
              var name = rule.selectorList.text;
              var file = _fileFromURL(url);
              targets.push({"type": "css", "url": url, "name": name, "file": file});
          }
      }
docs: Make the given css rule a target for goto
  @param [] targets array
  @param {CSS.Rule} node