Media Galleries API: hookup the AllGalleries permission and add tests.

chrome/test/data/extensions/api_test/media_galleries/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.
-
-chrome.experimental.app.onLaunched.addListener(function() {
-  var experimentalMediaGalleries = chrome.experimental.mediaGalleries;
-  var mediaGalleries = chrome.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);
-    // TODO(vandebo) Test that we can read from the file system object.
-  };
-  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 extractEmbeddedThumbnails() {
-      var result = experimentalMediaGalleries.extractEmbeddedThumbnails({});
-      chrome.test.assertEq(null, result);
-      chrome.test.succeed();
-    },
-
-    function assembleMediaFile() {
-      experimentalMediaGalleries.assembleMediaFile(
-          new Blob, {},
-          chrome.test.callbackPass(nullCallback));
-    },
-  ]);
-});