Gardening: svg/custom/js-late-gradient-and-object-creation.svg is flaky on win

BUG=353301
TEST=
TBR=zmo@chromium.org

Review URL: https://codereview.chromium.org/197063008

git-svn-id: svn://svn.chromium.org/blink/trunk@169390 bbb929c8-8fbe-4397-9dbb-9b2b20218538