Add gin, a lightweight bindings system for V8

gin/per_isolate_data.h

Index: gin/per_isolate_data.h
diff --git a/gin/per_isolate_data.h b/gin/per_isolate_data.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 GIN_PER_ISOLATE_DATA_H_
+#define GIN_PER_ISOLATE_DATA_H_
+
+#include <map>
+
+#include "base/basictypes.h"
+#include "gin/wrapper_info.h"
+#include "v8/include/v8.h"
+
+namespace gin {
+
+class PerIsolateData {
+ public:
+  explicit PerIsolateData(v8::Isolate* isolate);
+  ~PerIsolateData();
+
+  static PerIsolateData* From(v8::Isolate* isolate);
+
+  void RegisterObjectTemplate(WrapperInfo* info,
+                              v8::Local<v8::ObjectTemplate> object_template);
+
+ private:
+  typedef std::map<
+      WrapperInfo*, v8::Eternal<v8::ObjectTemplate> > ObjectTemplateMap;
+
+  v8::Isolate* isolate_;
+  ObjectTemplateMap object_templates_;
+
+  DISALLOW_COPY_AND_ASSIGN(PerIsolateData);
+};
+
+}  // namespace gin
+
+#endif  // GIN_PER_ISOLATE_DATA_H_