Turbofan needs a code handle and a CallInterfaceDescriptor. At the same time we spread knowledge about how to create the initial IC code object too widely. Consolidate code creation and unify it with a descriptor via CodeFactory.

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/567433002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23877 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/bleeding_edge' into bleeding_edge