Change media galleries to external file system type to add toURL support

chrome/test/data/extensions/api_test/media_galleries/tourl/test.js

+// Copyright 2014 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.
+
+function check_result_factory(expected) {

[Lei Zhang, 2014/03/20 21:37:53]

This might be useful in other tests. Maybe move to common_injected.js and use it
in other places later.

+  return function() {
+    if (expected) {
+      chrome.test.succeed();
+    } else {
+      chrome.test.fail();
+    }
+  };
+}
+
+function TestImageLoadFactory(url, should_load) {
+  return function() {
+    test_image = document.createElement('img');
+    document.body.appendChild(test_image);
+    test_image.addEventListener('load', check_result_factory(should_load));
+    test_image.addEventListener('error', check_result_factory(!should_load));
+
+    test_image.src = url;
+  };
+}
+
+CreateDummyWindowToPreventSleep();
+
+chrome.test.getConfig(function(config) {
+  var customArg = JSON.parse(config.customArg);
+  var gallery_id = customArg[0];
+  var extension_url = chrome.runtime.getURL('/');
+  var extension_id = extension_url.split('/')[2];
+
+  var bad_mount_point = 'filesystem:' + extension_url +
+    'external/invalid-Default-' + extension_id + '-' + gallery_id + '/test.jpg';
+
+  var bad_mount_name = 'filesystem:' + extension_url +
+    'external/media_galleries-Default-' + gallery_id + '/test.jpg';
+
+  var good_url = 'filesystem:' + extension_url +
+    'external/media_galleries-Default-' + extension_id + '-' + gallery_id +
+    '/test.jpg';
+
+  chrome.test.runTests([
+    TestImageLoadFactory(bad_mount_point, false),
+    TestImageLoadFactory(bad_mount_name, false),
+    TestImageLoadFactory(good_url, true),
+  ]);
+})