Implement a module system for the extension bindings JS.

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_
 #pragma once
 
 #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().
   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::Handle<v8::ObjectTemplate> object_template_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeHandler);
 };
 
 #endif  // CHROME_RENDERER_NATIVE_HANDLER_H_