[Interpreter] Support for operator new.

src/compiler/interpreter-assembler.h

Index: src/compiler/interpreter-assembler.h
diff --git a/src/compiler/interpreter-assembler.h b/src/compiler/interpreter-assembler.h
index 11f43ccf2648bcc2d2d36f0764bae61eabc1dcae..e49f9e919d75f28a207a5e85c10114b4bf93bbdc 100644
--- a/src/compiler/interpreter-assembler.h
+++ b/src/compiler/interpreter-assembler.h
@@ -101,8 +101,17 @@ class InterpreterAssembler {
   // Load the TypeFeedbackVector for the current function.
   Node* LoadTypeFeedbackVector();
 
-  // Call JSFunction or Callable |function| with |arg_count| (not including
-  // receiver) and the first argument located at |first_arg|.
+  // Call constructor |constructor| with |arg_count| arguments (not
+  // including receiver) and the first argument located at
+  // |first_arg|. The |original_constructor| is the same as the
+  // |constructor| for the new keyword, but differs for the super
+  // keyword.
+  Node* CallConstruct(Node* original_constructor, Node* constructor,
+                      Node* first_arg, Node* arg_count);
+
+  // Call JSFunction or Callable |function| with |arg_count|
+  // arguments (not including receiver) and the first argument
+  // located at |first_arg|.
   Node* CallJS(Node* function, Node* first_arg, Node* arg_count);
 
   // Call an IC code stub.