Begin implementing V8 bindings for Mojo

mojo/public/bindings/js/v8_per_isolate_data.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_PER_ISOLATE_DATA_H_
+#define MOJO_PUBLIC_BINDINGS_JS_V8_PER_ISOLATE_DATA_H_
+
+#include "mojo/public/system/macros.h"
+#include "v8/include/v8.h"
+
+namespace mojo {
+namespace js {
+
+class V8PerIsolateData {
+ public:
+  explicit V8PerIsolateData(v8::Isolate* isolate);
+  ~V8PerIsolateData();
+
+  static V8PerIsolateData* From(v8::Isolate* isolate);
+
+  v8::Local<v8::ObjectTemplate> handle_template() {
+    return handle_template_.Get(isolate_);
+  }
+
+  v8::Local<v8::ObjectTemplate> mojo_template() {
+    return mojo_template_.Get(isolate_);
+  }
+
+ private:
+  v8::Isolate* isolate_;
+  v8::Eternal<v8::ObjectTemplate> handle_template_;
+  v8::Eternal<v8::ObjectTemplate> mojo_template_;
+
+  MOJO_DISALLOW_COPY_AND_ASSIGN(V8PerIsolateData);
+};
+
+}  // namespace js
+}  // namespace mojo
+
+#endif  // MOJO_PUBLIC_BINDINGS_JS_V8_PER_ISOLATE_DATA_H_