Use register arguments for RestParamAccessStub

src/x64/interface-descriptors-x64.cc

Index: src/x64/interface-descriptors-x64.cc
diff --git a/src/x64/interface-descriptors-x64.cc b/src/x64/interface-descriptors-x64.cc
index f151c47bfbffe3f38d603adfaea7e04d539e0512..1d39d5dedd85099aea97b50c0b4df7d0771b1e0e 100644
--- a/src/x64/interface-descriptors-x64.cc
+++ b/src/x64/interface-descriptors-x64.cc
@@ -63,6 +63,12 @@ const Register ArgumentsAccessNewDescriptor::parameter_count() { return rcx; }
 const Register ArgumentsAccessNewDescriptor::parameter_pointer() { return rdx; }
 
 
+const Register RestParamAccessDescriptor::parameter_count() { return rcx; }
+const Register RestParamAccessDescriptor::parameter_pointer() { return rdx; }
+const Register RestParamAccessDescriptor::rest_parameter_index() { return rbx; }
+const Register RestParamAccessDescriptor::language_mode() { return rdi; }
+
+
 const Register ApiGetterDescriptor::function_address() { return r8; }