Begin implementing V8 bindings for Mojo

mojo/public/bindings/js/handle.h

Index: mojo/public/bindings/js/handle.h
diff --git a/mojo/public/bindings/js/handle.h b/mojo/public/bindings/js/handle.h
new file mode 100644
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+++ b/mojo/public/bindings/js/handle.h
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+// Copyright 2013 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 file.
+
+#ifndef MOJO_PUBLIC_BINDINGS_JS_HANDLE_H_
+#define MOJO_PUBLIC_BINDINGS_JS_HANDLE_H_
+
+#include "gin/converter.h"
+#include "mojo/public/system/core.h"
+
+namespace gin {
+
+template<>
+struct Converter<mojo::Handle> {
+  static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate,
+                                    mojo::Handle val);
+  static bool FromV8(v8::Handle<v8::Value> val,
+                     mojo::Handle* out);
+};
+
+}  // namespace gin
+
+#endif  // MOJO_PUBLIC_BINDINGS_JS_HANDLE_H_