only display downloads warning in full-tab view.

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

 // Copyright (c) 2011 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.
 
 // Setting the src of an img to an empty string can crash the browser, so we
 // use an empty 1x1 gif instead.
 const EMPTY_IMAGE_URI = 'data:image/gif;base64,'
         + 'R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw%3D%3D';
 
 var g_slideshow_data = null;
@@ skipping 2389 matching lines @@
       this.onOk_();
 
   };
 
   /**
    * Update the UI when the current directory changes.
    *
    * @param {cr.Event} event The directory-changed event.
    */
   FileManager.prototype.onDirectoryChanged_ = function(event) {
-    if (this.currentDirEntry_.fullPath.substr(0, DOWNLOADS_DIRECTORY.length) ==
+    if (this.dialogType_ == FileManager.DialogType.FULL_PAGE &&
+        this.currentDirEntry_.fullPath.substr(0, DOWNLOADS_DIRECTORY.length) ==
         DOWNLOADS_DIRECTORY) {
       if (this.downloadsWarning_.style.height != DOWNLOADS_WARNING_HEIGHT) {
         // Current path starts with DOWNLOADS_DIRECTORY, show the warning.
         this.downloadsWarning_.style.height = DOWNLOADS_WARNING_HEIGHT;
         this.requestResize_(100);
       }
     } else {
       if (this.downloadsWarning_.style.height != '0') {
         this.downloadsWarning_.style.height = '0';
         this.requestResize_(100);
@@ skipping 659 matching lines @@
 
     if (msg) {
       console.log('no no no');
       this.alert.show(msg, onAccept);
       return false;
     }
 
     return true;
   };
 })();