X87: StubCallInterfaceDescriptor takes a context register.
port r22448
original commit message:
StubCallInterfaceDescriptor and CallInterfaceDescriptor are unified under a base class InterfaceDescriptor.
Handling of the context register had to be massaged to effect the unification. This will make it easier
to call hydrogen code stubs directly from crankshaft.
BUG=
R=weiliang.lin@intel.com
Review URL: https://codereview.chromium.org/
399313005
Patch from Chunyang Dai <chunyang.dai@intel.com>.
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22459
ce2b1a6d-e550-0410-aec6-
3dcde31c8c00