Change dialog texts for folder upload to explicitly indicate it's for 'Uploading'

chrome/browser/resources/file_manager/js/file_selection.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.
 
 'use strict';
 
 /**
  * The current selection object.
  *
  * @param {FileManager} fileManager FileManager instance.
@@ skipping 246 matching lines @@
 
 /**
  * Updates the Ok button enabled state.
  *
  * @return {boolean} Whether button is enabled.
  */
 FileSelectionHandler.prototype.updateOkButton = function() {
   var selectable;
   var dialogType = this.fileManager_.dialogType;
 
-  if (dialogType == DialogType.SELECT_FOLDER) {
+  if (dialogType == DialogType.SELECT_FOLDER ||
+      dialogType == DialogType.SELECT_UPLOAD_FOLDER) {
     // In SELECT_FOLDER mode, we allow to select current directory
     // when nothing is selected.
     selectable = this.selection.directoryCount <= 1 &&
         this.selection.fileCount == 0;
   } else if (dialogType == DialogType.SELECT_OPEN_FILE) {
     selectable = (this.isFileSelectionAvailable() &&
                   this.selection.directoryCount == 0 &&
                   this.selection.fileCount == 1);
   } else if (dialogType == DialogType.SELECT_OPEN_MULTI_FILE) {
     selectable = (this.isFileSelectionAvailable() &&
@@ skipping 476 matching lines @@
   style.left = (boxWidth - imageWidth) / 2 + 'px';
   style.top = (boxHeight - imageHeight) / 2 + 'px';
   style.position = 'relative';
 
   util.applyTransform(largeImage, transform);
 
   largeImageBox.appendChild(largeImage);
   largeImageBox.style.zIndex = 1000;
   return true;
 };