Revert 184837

chrome/renderer/extensions/file_system_natives.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_FILE_SYSTEM_NATIVES_H_
 #define CHROME_RENDERER_EXTENSIONS_FILE_SYSTEM_NATIVES_H_
 
 #include "base/compiler_specific.h"
-#include "chrome/renderer/extensions/object_backed_native_handler.h"
+#include "chrome/renderer/extensions/chrome_v8_extension.h"
 
 namespace extensions {
 
 // Custom bindings for the nativeFileSystem API.
-class FileSystemNatives : public ObjectBackedNativeHandler {
+class FileSystemNatives : public ChromeV8Extension {
  public:
-  explicit FileSystemNatives(v8::Handle<v8::Context> context);
+  FileSystemNatives();
 
  private:
-  v8::Handle<v8::Value> GetFileEntry(const v8::Arguments& args);
-  v8::Handle<v8::Value> GetIsolatedFileSystem(const v8::Arguments& args);
-
   DISALLOW_COPY_AND_ASSIGN(FileSystemNatives);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_RENDERER_EXTENSIONS_FILE_SYSTEM_NATIVES_H_