[COPY] - Implemented API for tracking ongoing file transfers from file manager.

chrome/browser/resources/file_manager/js/directory_model.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.
 
 // If directory files changes too often, don't rescan directory more than once
 // per specified interval
 const SIMULTANEOUS_RESCAN_INTERVAL = 1000;
 
 /**
  * Data model of the file manager.
@@ skipping 745 matching lines @@
       groups.downloads = [entry];
       done();
     }
 
     function onDownloadsError(error) {
       groups.downloads = [];
       done();
     }
 
     function onGData(entry) {
+      console.log('onGData');
+      console.log(entry);
       groups.gdata = [entry];
       done();
     }
 
     function onGDataError(error) {
+      console.log('onGDataError');
+      console.log(error);
       groups.gdata = [];
       done();
     }
 
     var root = this.root_;
     root.getDirectory(DirectoryModel.DOWNLOADS_DIRECTORY, { create: false },
                       onDownloads, onDownloadsError);
     util.readDirectory(root, DirectoryModel.ARCHIVE_DIRECTORY,
                        append.bind(this, 'archives'));
     util.readDirectory(root, DirectoryModel.REMOVABLE_DIRECTORY,
                        append.bind(this, 'removables'));
     root.getDirectory(DirectoryModel.GDATA_DIRECTORY, { create: false },
                       onGData, onGDataError);
   },
 
   updateRoots: function(opt_callback) {
+    console.log('directoryModel_.updateRoots');
     var self = this;
     this.resolveRoots_(function(rootEntries) {
+      console.log('rootsList_ = ');
+      console.log(self.rootsList_);
       var dm = self.rootsList_;
       var args = [0, dm.length].concat(rootEntries);
       dm.splice.apply(dm, args);
 
       self.updateRootsListSelection_();
 
       if (opt_callback)
         opt_callback();
     });
   },
@@ skipping 137 matching lines @@
 
   recordMetrics_: function() {
     metrics.recordInterval('DirectoryScan');
     if (this.dir_.fullPath ==
         '/' + DirectoryModel.DOWNLOADS_DIRECTORY) {
       metrics.recordMediumCount("DownloadsCount", this.list_.length);
     }
   }
 };