[svg2] Make 'rx' and 'ry' presentation attributes

The following elements' rx and ry attributes have been made
into presentation attributes:

* rect
* ellipse

Spec:
  https://svgwg.org/svg2-draft/geometry.html#RXProperty
  https://svgwg.org/svg2-draft/geometry.html#RYProperty

BUG=400725

Review URL: https://codereview.chromium.org/955033002

git-svn-id: svn://svn.chromium.org/blink/trunk@190937 bbb929c8-8fbe-4397-9dbb-9b2b20218538
28 files changed
tree: 94e201a1c147929f090bce0ef4280fa054916306
  1. third_party/