Add initial Constructor type.

native_mate/constructor.h

@@ -0,0 +1,34 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE.chromium file.
+
+#ifndef NATIVE_MATE_WRAPPABLE_CLASS_H_
+#define NATIVE_MATE_WRAPPABLE_CLASS_H_
+
+#include "native_mate/wrappable.h"
+
+namespace mate {
+
+class Constructor {
+ public:
+  v8::Handle<v8::Function> GetFunction(v8::Isolate* isolate);
+
+ protected:
+  Constructor(const base::StringPiece& name);
+  virtual ~Constructor();
+
+  virtual void New() = 0;
+
+  virtual void SetPrototype(v8::Isolate* isolate,
+                            v8::Handle<v8::ObjectTemplate> prototype);
+
+ private:
+  base::StringPiece name_;
+  v8::Persistent<v8::FunctionTemplate> constructor_;
+
+  DISALLOW_COPY_AND_ASSIGN(Constructor);
+};
+
+}  // namespace mate
+
+#endif  // NATIVE_MATE_WRAPPABLE_CLASS_H_