Not updating the document.title property for open/save dialogs.

chrome/browser/resources/file_manager/js/file_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.
 
 /**
  * FileManager constructor.
  *
  * FileManager objects encapsulate the functionality of the file selector
  * dialogs, as well as the full screen file manager application (though the
  * latter is not yet implemented).
@@ skipping 3087 matching lines @@
     if (replace)
       history.replaceState(undefined, path, location);
     else
       history.pushState(undefined, path, location);
   },
 
   /**
    * Update the tab title.
    */
   FileManager.prototype.updateTitle_ = function() {
+    if (this.dialogType_ != FileManager.DialogType.FULL_PAGE)
+      return;
+
     this.document_.title = this.getCurrentDirectory().replace(
         new RegExp('^' + RootDirectory.GDATA),
         str('GDATA_DIRECTORY_LABEL'));
   },
 
   /**
    * Updates search box value when directory gets changed.
    */
   FileManager.prototype.updateSearchBoxOnDirChange_ = function() {
     var searchBox = this.dialogDom_.querySelector('#search-box');
@@ skipping 1103 matching lines @@
     }
 
     var defaultActionSeparator =
         this.dialogDom_.querySelector('#default-action-separator');
 
     this.defaultActionMenuItem_.hidden = !taskItem;
     defaultActionSeparator.hidden = !taskItem;
   }
 })();