GitLab

Drop SVGGraphicsElement.getTransformToElement as on SVG WG F2F:
https://lists.w3.org/Archives/Public/www-svg/2015Aug/att-0009/SVGWG-F2F-minutes-20150824.html#item02

BUG=524432

Review URL: https://codereview.chromium.org/1406303007

Cr-Commit-Position: refs/heads/master@{#357135}