Revert "Revert "Revert 157959 "Introduce new SVG*TearOff ref. graph."""

This revert reverts a revert of a revert of the change that added a new
SVG*TearOff reference graph. This is required due to a regression on
the fuzzers.

This reverts:
https://src.chromium.org/viewvc/blink?revision=158679&view=revision

TBR=kouhei
BUG=303476

Review URL: https://codereview.chromium.org/25840002

git-svn-id: svn://svn.chromium.org/blink/trunk@158796 bbb929c8-8fbe-4397-9dbb-9b2b20218538