Use a different map to distinguish eval contexts

src/code-factory.cc

Index: src/code-factory.cc
diff --git a/src/code-factory.cc b/src/code-factory.cc
index 79cc649d560e4d46140c50a747f1159ac67d15f5..d1c89f67c30e02d02e646315b76b6ffa7302e5e7 100644
--- a/src/code-factory.cc
+++ b/src/code-factory.cc
@@ -344,8 +344,8 @@ Callable CodeFactory::FastCloneShallowObject(Isolate* isolate, int length) {
 
 
 // static
-Callable CodeFactory::FastNewFunctionContext(Isolate* isolate) {
-  FastNewFunctionContextStub stub(isolate);
+Callable CodeFactory::FastNewFunctionContext(Isolate* isolate, bool for_eval) {
+  FastNewFunctionContextStub stub(isolate, for_eval);
   return make_callable(stub);
 }