Fix legacy UI in Files.app.

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

Index: chrome/browser/resources/file_manager/js/file_manager.js
diff --git a/chrome/browser/resources/file_manager/js/file_manager.js b/chrome/browser/resources/file_manager/js/file_manager.js
index c68904fabde0359603227f872cecda417d014bc5..26af4c25459643db374cb0910a1a8abd8a9c8a17 100644
--- a/chrome/browser/resources/file_manager/js/file_manager.js
+++ b/chrome/browser/resources/file_manager/js/file_manager.js
@@ -1060,9 +1060,11 @@ DialogType.isModal = function(type) {
   FileManager.prototype.initSidebar_ = function() {
     this.directoryTree_ = this.dialogDom_.querySelector('#directory-tree');
     DirectoryTree.decorate(this.directoryTree_, this.directoryModel_);
-    this.directoryTree_.addEventListener('content-updated', function() {
-      this.updateMiddleBarVisibility_(true);
-    }.bind(this));
+    if (util.platform.newUI()) {
+      this.directoryTree_.addEventListener('content-updated', function() {
+        this.updateMiddleBarVisibility_(true);
+      }.bind(this));
+    }
     if (util.platform.newUI()) {
       this.volumeList_ = this.dialogDom_.querySelector('#volume-list');
       VolumeList.decorate(this.volumeList_, this.directoryModel_);
@@ -1424,14 +1426,14 @@ DialogType.isModal = function(type) {
           this.table_.normalizeColumns();
       }
       this.table_.redraw();
-      this.volumeList_.redraw();
     }
 
     if (!util.platform.newUI())
       this.breadcrumbs_.truncate();
+    else
+      this.volumeList_.redraw();
 
     this.searchBreadcrumbs_.truncate();
-
     this.updateWindowState_();
   };
 
@@ -2539,7 +2541,8 @@ DialogType.isModal = function(type) {
       }
       this.table_.list.endBatchUpdates();
       this.grid_.endBatchUpdates();
-      this.updateMiddleBarVisibility_();
+      if (!util.platform.newUI())
+        this.updateMiddleBarVisibility_();

[yoshiki, 2013/05/13 02:00:48]

This is necessary on New UI. 

[mtomasz, 2013/05/13 02:07:38]

Fixed. Done.

       this.scanCompletedTimer_ = null;
     }.bind(this), 50);
   };