Enable test cases that no longer timeout.

R=bmeurer@chromium.org
BUG=v8:3522,v8:3526
LOG=N

Review URL: https://codereview.chromium.org/505113002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23388 ce2b1a6d-e550-0410-aec6-3dcde31c8c00