[Files.app] Use generateTopLevelEntries() method to retrieve the list on the top level

chrome/browser/resources/file_manager/js/directory_tree.js

Index: chrome/browser/resources/file_manager/js/directory_tree.js
diff --git a/chrome/browser/resources/file_manager/js/directory_tree.js b/chrome/browser/resources/file_manager/js/directory_tree.js
index a41502a2dd45738c4a8b87f7620e87587caf5737..ab2bca2624fdb3e5daaea9f7f2aab4b7388e22cc 100644
--- a/chrome/browser/resources/file_manager/js/directory_tree.js
+++ b/chrome/browser/resources/file_manager/js/directory_tree.js
@@ -596,16 +596,10 @@ DirectoryTree.prototype.maybeResolveMyDriveRoot_ = function(
  */
 DirectoryTree.prototype.updateSubDirectories = function(
     recursive, opt_successCallback, opt_errorCallback) {

[hirono, 2013/09/10 00:51:13]

opt_errorCallback will not be called.
Can we remove it?

[yoshiki, 2013/09/10 01:01:01]

I want to keep the same interface with
DirectoryItem.prototype.updateSubDirectories() since they has the same name.

-  var myDriveItem = this.items[0];
-  DirectoryTreeUtil.updateSubDirectories(
-      myDriveItem,
-      function(entries) {
-        this.entries_ = entries;
-        this.redraw(recursive);
-        if (opt_successCallback)
-          opt_successCallback();
-      }.bind(this),
-      opt_errorCallback);
+  this.entries_ = DirectoryTreeUtil.generateTopLevelEntries();
+  this.redraw(recursive);
+  if (opt_successCallback)
+    opt_successCallback();
 };
 
 /**