Revert 186643 - Caused a 10% regression on SunSpider benchmark

chrome/renderer/extensions/media_galleries_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_MEDIA_GALLERIES_CUSTOM_BINDINGS_H_
 #define CHROME_RENDERER_EXTENSIONS_MEDIA_GALLERIES_CUSTOM_BINDINGS_H_
 
 #include "chrome/renderer/extensions/chrome_v8_extension.h"
 
 namespace extensions {
 
 // Implements custom bindings for the media galleries API.
 class MediaGalleriesCustomBindings : public ChromeV8Extension {
  public:
-  MediaGalleriesCustomBindings(Dispatcher* dispatcher,
-                               v8::Handle<v8::Context> context);
+  MediaGalleriesCustomBindings();
 
  private:
   // FileSystemObject GetMediaFileSystem(string file_system_url): construct
   // a file system object from a file system url.
   v8::Handle<v8::Value> GetMediaFileSystemObject(const v8::Arguments& args);
 
   // DirectoryReader GetMediaFileSystem(FileEntry): synchronously return a
   // directory reader for a virtual directory.  The directory will contain
   // all of the thumbnails embedded in the passed file.
   v8::Handle<v8::Value> ExtractEmbeddedThumbnails(const v8::Arguments& args);
 
   DISALLOW_COPY_AND_ASSIGN(MediaGalleriesCustomBindings);
 };
 
 }  // extensions
 
 #endif  // CHROME_RENDERER_EXTENSIONS_MEDIA_GALLERIES_CUSTOM_BINDINGS_H_