[interpreter] VisitForTest for bytecode generator

src/interpreter/bytecode-label.cc

+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/interpreter/bytecode-label.h"
+
+#include "src/interpreter/bytecode-array-builder.h"
+
+namespace v8 {
+namespace internal {
+namespace interpreter {
+
+BytecodeLabel* BytecodeLabels::New() {
+  labels_.push_back(BytecodeLabel());
+  return &labels_.back();
+}
+
+void BytecodeLabels::Bind(BytecodeArrayBuilder* builder) {
+  for (auto label : labels_) {
+    builder->Bind(&label);
+  }
+}
+
+}  // namespace interpreter
+}  // namespace internal
+}  // namespace v8