[filemanager] Importing progress implemented.

chrome/browser/resources/file_manager/js/file_copy_manager.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.
 
 /**
  * @constructor
  * @param {DirectoryEntry} root Root directory entry.
  */
 function FileCopyManager(root) {
   this.copyTasks_ = [];
@@ skipping 798 matching lines @@
       var sourceFileUrl = sourceEntry.toURL();
       var targetFileUrl = targetDirEntry.toURL() + '/' +
                           encodeURIComponent(targetRelativePath);
       var transferedBytes = 0;
 
       function onFileTransferCompleted() {
         self.cancelCallback_ = null;
         chrome.fileBrowserPrivate.onFileTransfersUpdated.removeListener(
             onFileTransfersUpdated);
         if (chrome.extension.lastError) {
-          this.log_(
+          self.log_(
               'Error copying ' + sourceFileUrl + ' to ' + targetFileUrl);
           onFilesystemError({
             code: chrome.extension.lastError.message,
             toGDrive: task.targetOnGData,
             sourceFileUrl: sourceFileUrl
           });
         } else {
           targetDirEntry.getFile(targetRelativePath, {},
               function(targetEntry) {
                 targetEntry.getMetadata(function(metadata) {
@@ skipping 226 matching lines @@
  */
 FileCopyManager.prototype.sendDeleteEvent_ = function(task, reason) {
   this.sendEvent_('delete', {
     reason: reason,
     id: task.id,
     urls: task.entries.map(function(e) {
       return util.makeFilesystemUrl(e.fullPath);
     })
   });
 };