Remove SVGElement.offsetParent/offsetTop/offsetLeft/offsetWidth/offsetHeight

Intent to Remove:
https://groups.google.com/a/chromium.org/d/msg/blink-dev/jjwLLSG_hGY/Ovi-nvEeDwAJ

BUG=463116

Review URL: https://codereview.chromium.org/1726743002

Cr-Commit-Position: refs/heads/master@{#377283}
8 files changed