Move ModuleSystem and NativeHandler to extensions/

chrome/renderer/extensions/module_system.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_MODULE_SYSTEM_H_
-#define CHROME_RENDERER_MODULE_SYSTEM_H_
+#ifndef CHROME_RENDERER_EXTENSIONS_MODULE_SYSTEM_H_
+#define CHROME_RENDERER_EXTENSIONS_MODULE_SYSTEM_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/scoped_ptr.h"
-#include "chrome/renderer/native_handler.h"
+#include "chrome/renderer/extensions/native_handler.h"
 #include "v8/include/v8.h"
 
 #include <map>
 #include <set>
 #include <string>
 
+namespace extensions {
+
 // A module system for JS similar to node.js' require() function.
 // Each module has three variables in the global scope:
 //   - exports, an object returned to dependencies who require() this
 //     module.
 //   - require, a function that takes a module name as an argument and returns
 //     that module's exports object.
 //   - requireNative, a function that takes the name of a registered
 //     NativeHandler and returns an object that contains the functions the
 //     NativeHandler defines.
 //
@@ skipping 102 matching lines @@
 
   // When 0, natives are disabled, otherwise indicates how many callers have
   // pinned natives as enabled.
   int natives_enabled_;
 
   std::set<std::string> overridden_native_handlers_;
 
   DISALLOW_COPY_AND_ASSIGN(ModuleSystem);
 };
 
-#endif  // CHROME_RENDERER_MODULE_SYSTEM_H_
+}  // extensions
+
+#endif  // CHROME_RENDERER_EXTENSIONS_MODULE_SYSTEM_H_