harmony-classes: Implement 'super(...)' call syntactic restriction.

src/ast-this-access-visitor.h

Index: src/ast-this-access-visitor.h
diff --git a/src/ast-this-access-visitor.h b/src/ast-this-access-visitor.h
new file mode 100644
index 0000000000000000000000000000000000000000..3317922ca5b8191911eab8ac14fe857f25e35a48
--- /dev/null
+++ b/src/ast-this-access-visitor.h
@@ -0,0 +1,34 @@
+// Copyright 2014 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.
+
+#ifndef V8_AST_THIS_ACCESS_VISITOR_H_
+#define V8_AST_THIS_ACCESS_VISITOR_H_
+#include "src/ast.h"
+
+namespace v8 {
+namespace internal {
+
+class AstThisAccessVisitor : public AstVisitor {
+ public:
+  explicit AstThisAccessVisitor(Zone* zone);
+
+  bool UsesThis() { return uses_this_; }
+
+#define DECLARE_VISIT(type) virtual void Visit##type(type* node);
+  AST_NODE_LIST(DECLARE_VISIT)
+#undef DECLARE_VISIT
+
+ private:
+  bool uses_this_;
+
+  void VisitIfNotNull(AstNode* node) {
+    if (node != NULL) Visit(node);
+  }
+
+  DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
+  DISALLOW_COPY_AND_ASSIGN(AstThisAccessVisitor);
+};
+}
+}  // namespace v8::intrenal
+#endif  // V8_AST_THIS_ACCESS_VISITOR_H_