[stubs]: Convert FastNewContext stub to turbofan

src/crankshaft/s390/lithium-codegen-s390.cc

Index: src/crankshaft/s390/lithium-codegen-s390.cc
diff --git a/src/crankshaft/s390/lithium-codegen-s390.cc b/src/crankshaft/s390/lithium-codegen-s390.cc
index 32ac576b8e1a5b4627935a2956ec22d6de7120f7..81217fa87b32ad95b24d2b66832c507a91898232 100644
--- a/src/crankshaft/s390/lithium-codegen-s390.cc
+++ b/src/crankshaft/s390/lithium-codegen-s390.cc
@@ -162,10 +162,10 @@ void LCodeGen::DoPrologue(LPrologue* instr) {
       __ Push(info()->scope()->GetScopeInfo(info()->isolate()));
       __ CallRuntime(Runtime::kNewScriptContext);
       deopt_mode = Safepoint::kLazyDeopt;
-    } else if (slots <= FastNewContextStub::kMaximumSlots) {
-      FastNewContextStub stub(isolate(), slots);
+    } else if (slots <= FastNewFunctionContextStub::kMaximumSlots) {
+      FastNewFunctionContextStub stub(isolate(), slots);
       __ CallStub(&stub);
-      // Result of FastNewContextStub is always in new space.
+      // Result of FastNewFunctionContextStub is always in new space.
       need_write_barrier = false;
     } else {
       __ push(r3);