Begin implementing V8 bindings for Mojo

mojo/public/bindings/js/v8_runner.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_MAIN_H_
+#define MOJO_PUBLIC_BINDINGS_JS_V8_MAIN_H_
+
+#include "mojo/public/system/macros.h"
+#include "v8/include/v8.h"
+
+namespace mojo {
+namespace js {
+
+class Runner {
+ public:
+  explicit Runner(v8::Isolate* isolate);
+  ~Runner();
+
+  void Run(v8::Handle<v8::Script> script);
+
+  v8::Handle<v8::Context> context(v8::Isolate* isolate) {
+    return v8::Local<v8::Context>::New(isolate, context_);
+  }
+
+  class Scope {
+   public:
+    explicit Scope(Runner* runner);
+    ~Scope();
+
+   private:
+    v8::HandleScope handle_scope_;
+    v8::Context::Scope scope_;
+
+    MOJO_DISALLOW_COPY_AND_ASSIGN(Scope);
+  };
+
+ private:
+  friend class Scope;
+
+  v8::Isolate* isolate_;
+  v8::Persistent<v8::Context> context_;
+
+  MOJO_DISALLOW_COPY_AND_ASSIGN(Runner);
+};
+
+
+}  // namespace js
+}  // namespace mojo
+
+#endif  // MOJO_PUBLIC_BINDINGS_JS_V8_MAIN_H_