[Interpreter] Support for operator new.

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 e5025a72f38f38210acd6358ae38d5c513aa4b09..172e04908fd90002fdadc441eabffa90a2393529 100644
--- a/src/interpreter/bytecode-array-builder.h
+++ b/src/interpreter/bytecode-array-builder.h
@@ -88,7 +88,13 @@ class BytecodeArrayBuilder {
   BytecodeArrayBuilder& CallRuntime(Runtime::FunctionId function_id,
                                     Register first_arg, size_t arg_count);
 
-  // Operators (register == lhs, accumulator = rhs).
+  // Call the new operator. The |constructor| register is followed by
+  // |arg_count| consecutive registers containing arguments to be
+  // applied to the constructor.
+  BytecodeArrayBuilder& New(Register constructor, Register first_arg,
+                            size_t arg_count);
+
+  // Operators (register holds the lhs value, accumulator holds the rhs value).
   BytecodeArrayBuilder& BinaryOperation(Token::Value binop, Register reg,
                                         Strength strength);