Files.app: Specify a test case name to the test system.

chrome/test/data/extensions/api_test/file_manager_browsertest/background.js

 // Copyright (c) 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.
 
 'use strict';
 
 /**
  * Extension ID of Files.app.
  * @type {string}
  * @const
@@ skipping 767 matching lines @@
     // Obtain the root entry paths.
     function(result) {
       var roots = JSON.parse(result);
       RootPath.DOWNLOADS = roots.downloads;
       RootPath.DRIVE = roots.drive;
       chrome.test.sendMessage(
           JSON.stringify({name: 'getTestName'}), steps.shift());
     },
     // Run the test case.
     function(testCaseName) {
-      if (!testcase[testCaseName]) {
-        chrome.test.runTests([function() {
-          chrome.test.fail(testCaseName + ' is not found.');
-        }]);
+      var targetTest = testcase[testCaseName];
+      if (!targetTest) {
+        chrome.test.fail(testCaseName + ' is not found.');
         return;
       }
-      chrome.test.runTests([testcase[testCaseName]]);
+      // Specify the name of test to the test system.
+      targetTest.generatedName = testCaseName;
+      chrome.test.runTests([targetTest]);
     }
   ];
   steps.shift()();
 });