Unofficial gardening. Tighten up some expectations for no-longer-crashing tests.

BUG=230257
TBR=piman

Review URL: https://codereview.chromium.org/18797002

git-svn-id: svn://svn.chromium.org/blink/trunk@153643 bbb929c8-8fbe-4397-9dbb-9b2b20218538