Begin implementing V8 bindings for Mojo

mojo/public/bindings/js/v8_wrapper.h

+// 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_V8_WRAPPER_H_
+#define MOJO_PUBLIC_BINDINGS_JS_V8_WRAPPER_H_
+
+#include "v8/include/v8.h"
+
+namespace mojo {
+namespace js {
+
+enum InternalFields {
+  kWrapperInfoIndex,
+  kEncodedValueIndex,
+  kNumberOfInternalFields,
+};
+
+struct WrapperInfo {
+  static WrapperInfo* From(v8::Handle<v8::Object> object);
+  // Currently we just use the address of this struct for identity.
+};
+
+template<typename T>
+struct Wrapper {};
+
+template<>
+struct Wrapper<int32_t> {
+  static v8::Handle<v8::Value> ToObject(v8::Isolate* isolate,
+                                        int32_t native);
+  static int32_t ToNative(v8::Handle<v8::Value> value);
+};
+
+template<>
+struct Wrapper<uint32_t> {
+  static v8::Handle<v8::Value> ToObject(v8::Isolate* isolate,
+                                        uint32_t native);
+  static uint32_t ToNative(v8::Handle<v8::Value> value);
+};
+
+template<>
+struct Wrapper<uint64_t> {
+  static v8::Handle<v8::Value> ToObject(v8::Isolate* isolate,
+                                        uint64_t native);
+  static uint64_t ToNative(v8::Handle<v8::Value> value);
+};
+
+}  // namespace js
+}  // namespace mojo
+
+#endif  // MOJO_PUBLIC_BINDINGS_JS_V8_WRAPPER_H_