Partial revert of rest parameter desugaring.

src/code-stubs.cc

Index: src/code-stubs.cc
diff --git a/src/code-stubs.cc b/src/code-stubs.cc
index 4e2e46e66c9626ad10e0c90e6e78b525aeb81cdd..1754288b6ed751b066519c6871cf6e0b1380e424 100644
--- a/src/code-stubs.cc
+++ b/src/code-stubs.cc
@@ -838,6 +838,9 @@ void StoreFastElementStub::GenerateAheadOfTime(Isolate* isolate) {
 }
 
 
+void RestParamAccessStub::Generate(MacroAssembler* masm) { GenerateNew(masm); }
+
+
 void ArgumentsAccessStub::Generate(MacroAssembler* masm) {
   switch (type()) {
     case READ_ELEMENT:
@@ -876,6 +879,11 @@ void ArgumentsAccessStub::PrintName(std::ostream& os) const {  // NOLINT
 }
 
 
+void RestParamAccessStub::PrintName(std::ostream& os) const {  // NOLINT
+  os << "RestParamAccessStub_";
+}
+
+
 void ArrayConstructorStub::PrintName(std::ostream& os) const {  // NOLINT
   os << "ArrayConstructorStub";
   switch (argument_count()) {