Replace CheckBuilder with IfBuilder everywhere.

This deprecates and removes the CheckBuilder which is less powerful
than the generic IfBuilder which can deopt as well by now.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/14075013

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@14372 ce2b1a6d-e550-0410-aec6-3dcde31c8c00