...as per January meeting. Renames 'cast' to 'resolve'. We rename the prior 'resolve' to 'accept', to keep the chain API usable.

R=svenpanne@chromium.org
BUG=

Review URL: https://codereview.chromium.org/200763012

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20040 ce2b1a6d-e550-0410-aec6-3dcde31c8c00