Extend expectations for slow test cases on the V8/blink trunk builder.

The second test has an existing expectation that is extended.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/19299004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15690 ce2b1a6d-e550-0410-aec6-3dcde31c8c00