Revert 128089 - Initial extension bindings for Media Gallery API.

chrome/renderer/resources/extensions/experimental.media_galleries_custom_bindings.js

-// 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.
-
-// Custom bindings for the Media Gallery API.
-
-var mediaGalleriesNatives = requireNative('experimental_mediaGalleries');
-var CreateMediaGalleryObject = mediaGalleriesNatives.CreateMediaGalleryObject;
-
-var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();
-
-chromeHidden.registerCustomHook('experimental.mediaGalleries',
-                                function(bindingsAPI, extensionId) {
-  var apiFunctions = bindingsAPI.apiFunctions;
-
-  apiFunctions.setCustomCallback('getMediaGalleries',
-                                 function(name, request, response) {
-    var result = [];
-    var resp = response ? chromeHidden.JSON.parse(response) : [];
-    for (var i = 0; i < resp.length; i++) {
-      result.push(CreateMediaGalleryObject(resp[i].id, resp[i].name,
-                                           resp[i].flags));
-
-    }
-    if (request.callback)
-      request.callback(result);
-    request.callback = null;
-  });
-});