Move extensions bindings code out of //chrome

extensions/renderer/i18n_custom_bindings.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_I18N_CUSTOM_BINDINGS_H_
-#define CHROME_RENDERER_EXTENSIONS_I18N_CUSTOM_BINDINGS_H_
+#ifndef EXTENSIONS_RENDERER_I18N_CUSTOM_BINDINGS_H_
+#define EXTENSIONS_RENDERER_I18N_CUSTOM_BINDINGS_H_
 
-#include "chrome/renderer/extensions/chrome_v8_extension.h"
+#include "extensions/renderer/object_backed_native_handler.h"
 
 namespace extensions {
+class ScriptContext;
 
 // Implements custom bindings for the i18n API.
-class I18NCustomBindings : public ChromeV8Extension {
+class I18NCustomBindings : public ObjectBackedNativeHandler {
  public:
-  I18NCustomBindings(Dispatcher* dispatcher, ChromeV8Context* context);
+  I18NCustomBindings(ScriptContext* context);
 
  private:
   void GetL10nMessage(const v8::FunctionCallbackInfo<v8::Value>& args);
   void GetL10nUILanguage(const v8::FunctionCallbackInfo<v8::Value>& args);
 };
 
 }  // namespace extensions
 
-#endif  // CHROME_RENDERER_EXTENSIONS_I18N_CUSTOM_BINDINGS_H_
+#endif  // EXTENSIONS_RENDERER_I18N_CUSTOM_BINDINGS_H_