Gardening: update some expectations

fast/dom/HTMLScriptElement/dont-load-unknown-type.html -> passes
svg/as-object/sizing/svg-in-object-placeholder-height-auto.html -> widen
svg/custom/resource-client-removal.svg -> add failure

BUG=380649,392640,393087
TBR=junov

Review URL: https://codereview.chromium.org/385883003

git-svn-id: svn://svn.chromium.org/blink/trunk@177895 bbb929c8-8fbe-4397-9dbb-9b2b20218538