Convert tabs, windows, and extension APIs to feature system.

chrome/renderer/extensions/chrome_v8_extension.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_EXTENSION_H_
 #define CHROME_RENDERER_EXTENSIONS_CHROME_V8_EXTENSION_H_
 #pragma once
 
 #include "base/logging.h"
 #include "base/memory/linked_ptr.h"
@@ skipping 31 matching lines @@
   template<class T>
   static T* GetFromArguments(const v8::Arguments& args) {
     CHECK(!args.Data().IsEmpty());
     T* result = static_cast<T*>(args.Data().As<v8::External>()->Value());
     return result;
   }
 
   // Gets the render view for the current v8 context.
   static content::RenderView* GetCurrentRenderView();
 
-  // Note: do not call this function before or during the chromeHidden.onLoad
-  // event dispatch. The URL might not have been committed yet and might not
-  // be an extension URL.
-  const ::Extension* GetExtensionForCurrentRenderView() const;
-
   // Returns the chromeHidden object for the current context.
   static v8::Handle<v8::Value> GetChromeHidden(const v8::Arguments& args);
 
   ExtensionDispatcher* extension_dispatcher_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ChromeV8Extension);
 };
 
 #endif  // CHROME_RENDERER_EXTENSIONS_CHROME_V8_EXTENSION_H_