Revert 128089 - Initial extension bindings for Media Gallery API.

chrome/test/data/extensions/api_test/media_gallery/test.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.
-
-var mediaGalleries = chrome.experimental.mediaGalleries;
-var emptyListCallback = function(results) {
-  chrome.test.assertEq(results, []);
-};
-var nullCallback = function(results) {
-  chrome.test.assertEq(results, null);
-};
-
-chrome.test.runTests([
-  function getGalleries() {
-    mediaGalleries.getMediaGalleries(
-        chrome.test.callbackPass(emptyListCallback));
-  },
-
-  function assembleMediaFile() {
-    mediaGalleries.assembleMediaFile(
-        {}, {}, chrome.test.callbackPass(nullCallback));
-  },
-
-  function parseMediaFileMetadata() {
-    mediaGalleries.parseMediaFileMetadata(
-        {}, chrome.test.callbackPass(nullCallback));
-  },
-]);