[Interpreter] Support for operator new.

src/interpreter/bytecode-array-builder.cc

Index: src/interpreter/bytecode-array-builder.cc
diff --git a/src/interpreter/bytecode-array-builder.cc b/src/interpreter/bytecode-array-builder.cc
index 5476a475f214c51d72dd88875a4badc0a632a2ac..6f6439ae1bc56c44f8b36b6f0de06c6ac122a4f3 100644
--- a/src/interpreter/bytecode-array-builder.cc
+++ b/src/interpreter/bytecode-array-builder.cc
@@ -528,6 +528,16 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::CallRuntime(
 }
 
 
+BytecodeArrayBuilder& BytecodeArrayBuilder::New(Register constructor,
+                                                Register first_arg,
+                                                size_t arg_count) {
+  DCHECK(FitsInIdx8Operand(arg_count));
+  Output(Bytecode::kNew, constructor.ToOperand(), first_arg.ToOperand(),
+         static_cast<uint8_t>(arg_count));
+  return *this;
+}
+
+
 size_t BytecodeArrayBuilder::GetConstantPoolEntry(Handle<Object> object) {
   // These constants shouldn't be added to the constant pool, the should use
   // specialzed bytecodes instead.