Use FileEntry.copyTo() and FileEntry.moveTo() on GData file system.

chrome/browser/resources/file_manager/js/util.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.
 
 /**
  * Namespace for utility functions.
  */
 var util = {
   /**
    * Returns a function that console.log's its arguments, prefixed by |msg|.
@@ skipping 50 matching lines @@
     return str.replace(/&(lt|gt|amp);/g, function(entity) {
       switch (entity) {
         case '&lt;': return '<';
         case '&gt;': return '>';
         case '&amp;': return '&';
       }
     });
   },
 
   /**
-   * Given a list of Entries, recurse any DirectoryEntries, and call back
-   * with a list of all file and directory entries encountered (including the
-   * original set).
+   * Given a list of Entries, recurse any DirectoryEntries if |recurse| is true,
+   * and call back with a list of all file and directory entries encountered
+   * (including the original set).
    */
-  recurseAndResolveEntries: function(entries, successCallback, errorCallback) {
+  recurseAndResolveEntries: function(entries, recurse,
+                                     successCallback, errorCallback) {
     var pendingSubdirectories = 0;
     var pendingFiles = 0;
 
     var dirEntries = [];
     var fileEntries = [];
     var fileBytes = 0;
 
     function pathCompare(a, b) {
       if (a.fullPath > b.fullPath)
         return 1;
@@ skipping 16 matching lines @@
 
         if (successCallback) {
           successCallback(result);
         }
       }
     }
 
     function tallyEntry(entry) {
       if (entry.isDirectory) {
         dirEntries.push(entry);
-        recurseDirectory(entry);
+        if (recurse) {
+          recurseDirectory(entry);
+        }
       } else {
         fileEntries.push(entry);
         pendingFiles++;
         entry.getMetadata(function(metadata) {
           fileBytes += metadata.size;
           pendingFiles--;
           areWeThereYet();
         });
       }
     }
@@ skipping 387 matching lines @@
    * @param {Event} event
    * @return {string}
    */
   getKeyModifiers: function(event) {
     return (event.ctrlKey ? 'Ctrl-' : '') +
            (event.altKey ? 'Alt-' : '') +
            (event.shiftKey ? 'Shift-' : '') +
            (event.metaKey ? 'Meta-' : '');
   }
 };