- Output from console.timeEnd is now supported
- The final result is printed in table format with ; separator,
  making it easy to copy/paste into a spreadsheet.
- Various style improvements.

Change-Id: Iba00ee54720344765262b5cc44c1e939278b03a4
Notry: true
Reviewed-on: https://chromium-review.googlesource.com/c/1405030
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59030}