code: private List<BrowserUsageData> getBrowserData() {
      List<BrowserUsageData> browserData = new ArrayList<BrowserUsageData>();
      browserData
          .add(getMSIEUsageData());
      browserData
          .add(getFirefoxUsageData());
      browserData
          .add(getChromeUsageData());
      browserData
          .add(getSafariUsageData());
      browserData
          .add(getOperaUsageData());
      return browserData;
    }
docs: Creates the data displayed in the donut chart.