Revert 147895 - switch mediaGalleries to .idl api definition

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 mediaFileSystemsListCallback = function(results) {
+  // There should be a "Pictures" directory on all desktop platforms.
+  var expectedFileSystems = 1;
+  // But not on Android and ChromeOS.
+  if (/Android/.test(navigator.userAgent) || /CrOS/.test(navigator.userAgent)) {
+    expectedFileSystems = 0;
+  }
+  chrome.test.assertEq(expectedFileSystems, results.length);
+};
+var nullCallback = function(result) {
+  chrome.test.assertEq(null, result);
+};
+
+function runTests(tests) {
+  chrome.test.getConfig(function(config) {
+    operatingSystem = config.osName;
+    chrome.test.runTests(tests);
+  });
+}
+
+chrome.test.runTests([
+  function getGalleries() {
+    mediaGalleries.getMediaFileSystems(
+        chrome.test.callbackPass(mediaFileSystemsListCallback));
+  },
+
+  function openMediaGalleryManager() {
+    // Just confirm that the function exists.
+    chrome.test.assertTrue(mediaGalleries.openMediaGalleryManager !== null);
+    chrome.test.succeed()
+  },
+
+  function extractEmbeddedThumbnails() {
+    var result = mediaGalleries.extractEmbeddedThumbnails({});
+    chrome.test.assertEq(null, result);
+    chrome.test.succeed()
+  },
+
+  function assembleMediaFile() {
+    mediaGalleries.assembleMediaFile(
+        {}, {}, chrome.test.callbackPass(nullCallback));
+  },
+]);