[turbofan] Add NewUnmappedArgumentsElements and NewRestParametersArguments.

src/interface-descriptors.h

Index: src/interface-descriptors.h
diff --git a/src/interface-descriptors.h b/src/interface-descriptors.h
index e3f4a2a98984d2d79614f801329a04a396808243..67d23b159136dd2acfad3c0b44c499cbedb67d70 100644
--- a/src/interface-descriptors.h
+++ b/src/interface-descriptors.h
@@ -87,6 +87,7 @@ class PlatformInterfaceDescriptor;
   V(MathPowTagged)                        \
   V(MathPowInteger)                       \
   V(GrowArrayElements)                    \
+  V(NewArgumentsElements)                 \
   V(InterpreterDispatch)                  \
   V(InterpreterPushArgsAndCall)           \
   V(InterpreterPushArgsAndConstruct)      \
@@ -779,6 +780,13 @@ class GrowArrayElementsDescriptor : public CallInterfaceDescriptor {
   static const Register KeyRegister();
 };
 
+class NewArgumentsElementsDescriptor final : public CallInterfaceDescriptor {
+ public:
+  DEFINE_PARAMETERS(kFormalParameterCount)
+  DECLARE_DESCRIPTOR_WITH_CUSTOM_FUNCTION_TYPE(NewArgumentsElementsDescriptor,
+                                               CallInterfaceDescriptor)
+};
+
 class V8_EXPORT_PRIVATE InterpreterDispatchDescriptor
     : public CallInterfaceDescriptor {
  public: