[filebrowser] Add left panel with roots.

chrome/browser/resources/file_manager/js/harness.js

 // Copyright (c) 2011 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 harness = {
   /**
    * Kick off the test harness.
    *
    * Called by harness.html after the dom has been parsed.
    */
   init: function() {
     console.log('Initializing harness...');
 
     util.installFileErrorToString();
 
     var self = this;
 
     function onFilesystem(filesystem) {
       console.log('Filesystem found.');
       self.filesystem = filesystem;
       util.getOrCreateDirectory(filesystem.root, '/Downloads', function () {});
-      util.getOrCreateDirectory(filesystem.root, '/media', function () {});
+      util.getOrCreateDirectory(filesystem.root, '/removable', function () {});
+      util.getOrCreateDirectory(filesystem.root, '/removable/disk1',
+          function () {});
+      util.getOrCreateDirectory(filesystem.root, '/removable/disk2',
+          function () {});
     };
 
     window.webkitRequestFileSystem(window.PERSISTENT, 16 * 1024 * 1024,
                                    onFilesystem,
                                    util.flog('Error initializing filesystem'));
 
     var paramstr = decodeURIComponent(document.location.search.substr(1));
     this.params = paramstr ? JSON.parse(paramstr) : {};
 
     var input = document.getElementById('default-path');
@@ skipping 102 matching lines @@
       var destPath = harness.fileManager.currentDirEntry_.fullPath + '/' +
           currentSrc.name.replace(/\^\^/g, '/');
       util.getOrCreateFile(self.filesystem.root, destPath, onFileFound,
                            util.flog('Error finding path: ' + destPath));
     }
 
     console.log('Start import: ' + files.length + ' file(s)');
     processNextFile();
   },
 };