[Interpreter] Add function literal support.

src/interpreter/bytecode-array-builder.h

Index: src/interpreter/bytecode-array-builder.h
diff --git a/src/interpreter/bytecode-array-builder.h b/src/interpreter/bytecode-array-builder.h
index fd49267154128a082e629382376e2182eba71925..e5025a72f38f38210acd6358ae38d5c513aa4b09 100644
--- a/src/interpreter/bytecode-array-builder.h
+++ b/src/interpreter/bytecode-array-builder.h
@@ -72,6 +72,9 @@ class BytecodeArrayBuilder {
                                            int feedback_slot,
                                            LanguageMode language_mode);
 
+  // Create a new closure for the SharedFunctionInfo in the accumulator.
+  BytecodeArrayBuilder& CreateClosure(PretenureFlag tenured);
+
   // Call a JS function. The JSFunction or Callable to be called should be in
   // |callable|, the receiver should be in |receiver| and all subsequent
   // arguments should be in registers <receiver + 1> to