Move some methods from OperatorProperties into Scheduler that are only related to scheduling. Now these methods take a Node* parameter, as decisions relating floating control need distinguish not just operators but nodes.

R=bmeurer@chromium.org
BUG=

Review URL: https://codereview.chromium.org/474983003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23160 ce2b1a6d-e550-0410-aec6-3dcde31c8c00