OilpanLeakExpectations: add svg font reload leak case

I would like to leave this leak case as a WONTFIX for now, as SVG fonts are likely to be deprecated before oilpan is enabled on trunk.

TBR=tkent
NOTRY=true
BUG=390094

Review URL: https://codereview.chromium.org/332983007

git-svn-id: svn://svn.chromium.org/blink/trunk@177638 bbb929c8-8fbe-4397-9dbb-9b2b20218538