Move ModuleSystem and NativeHandler to extensions/

chrome/renderer/native_handler.h

-// Copyright (c) 2012 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 CHROME_RENDERER_NATIVE_HANDLER_H_
-#define CHROME_RENDERER_NATIVE_HANDLER_H_
-
-#include "base/bind.h"
-#include "base/memory/linked_ptr.h"
-#include "v8/include/v8.h"
-
-#include <string>
-#include <vector>
-
-// A NativeHandler is a factory for JS objects with functions on them that map
-// to native C++ functions. Subclasses should call RouteFunction() in their
-// constructor to define functions on the created JS objects.
-//
-// NativeHandlers are intended to be used with a ModuleSystem. The ModuleSystem
-// will assume ownership of the NativeHandler, and as a ModuleSystem is tied to
-// a single v8::Context, this implies that NativeHandlers will also be tied to
-// a single v8::context.
-// TODO(koz): Rename this to NativeJavaScriptModule.
-class NativeHandler {
- public:
-  explicit NativeHandler();
-  virtual ~NativeHandler();
-
-  // Create an object with bindings to the native functions defined through
-  // RouteFunction().
-  virtual v8::Handle<v8::Object> NewInstance();
-
- protected:
-  typedef v8::Handle<v8::Value> (*HandlerFunc)(const v8::Arguments&);
-  typedef base::Callback<v8::Handle<v8::Value>(const v8::Arguments&)>
-      HandlerFunction;
-
-  // Installs a new 'route' from |name| to |handler_function|. This means that
-  // NewInstance()s of this NativeHandler will have a property |name| which
-  // will be handled by |handler_function|.
-  void RouteFunction(const std::string& name,
-                     const HandlerFunction& handler_function);
-
-  void RouteStaticFunction(const std::string& name,
-                           const HandlerFunc handler_func);
-
- private:
-  static v8::Handle<v8::Value> Router(const v8::Arguments& args);
-
-  std::vector<linked_ptr<HandlerFunction> > handler_functions_;
-  v8::Persistent<v8::ObjectTemplate> object_template_;
-
-  DISALLOW_COPY_AND_ASSIGN(NativeHandler);
-};
-
-#endif  // CHROME_RENDERER_NATIVE_HANDLER_H_