Implement a module system for the extension bindings JS.

chrome/renderer/extensions/chrome_v8_context.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_EXTENSIONS_CHROME_V8_CONTEXT_H_
 #define CHROME_RENDERER_EXTENSIONS_CHROME_V8_CONTEXT_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
+#include "chrome/renderer/module_system.h"
 #include "v8/include/v8.h"
 
 namespace WebKit {
 class WebFrame;
 }
 
 namespace content {
 class RenderView;
 }
 
@@ skipping 31 matching lines @@
     return web_frame_;
   }
   void clear_web_frame() {
     web_frame_ = NULL;
   }
 
   ContextType context_type() const {
     return context_type_;
   }
 
+  void set_module_system(scoped_ptr<ModuleSystem> module_system) {
+    module_system_ = module_system.Pass();
+  }
+
   // Returns a special Chrome-specific hidden object that is associated with a
   // context, but not reachable from the JavaScript in that context. This is
   // used by our v8::Extension implementations as a way to share code and as a
   // bridge between C++ and JavaScript.
   static v8::Handle<v8::Value> GetOrCreateChromeHidden(
       v8::Handle<v8::Context> context);
 
   // Return the chromeHidden object associated with this context, or an empty
   // handle if no chrome hidden has been created (by GetOrCreateChromeHidden)
   // yet for this context.
@@ skipping 33 matching lines @@
   // The WebFrame associated with this context. This can be NULL because this
   // object can outlive is destroyed asynchronously.
   WebKit::WebFrame* web_frame_;
 
   // The extension ID this context is associated with.
   std::string extension_id_;
 
   // The type of context.
   ContextType context_type_;
 
+  // Owns and structures the JS that is injected to set up extension bindings.
+  scoped_ptr<ModuleSystem> module_system_;
+
   DISALLOW_COPY_AND_ASSIGN(ChromeV8Context);
 };
 
 #endif  // CHROME_RENDERER_EXTENSIONS_CHROME_V8_CONTEXT_H_