Export the dialog type where Quick View is opened.

ui/file_manager/file_manager/foreground/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.
  *
@@ skipping 530 matching lines @@
 
     this.quickViewModel_ = new QuickViewModel();
     /**@private {!FilesQuickView} */
     var quickView = /** @type {!FilesQuickView} */
         (queryRequiredElement('#quick-view'));
     var fileListSelectionModel = /** @type {!cr.ui.ListSelectionModel} */ (
         this.directoryModel_.getFileListSelection());
     chrome.commandLinePrivate.hasSwitch(
         'disable-files-quick-view', function(disabled) {
           if (!disabled) {
-            this.quickViewUma_ =
-                new QuickViewUma(assert(this.volumeManager_));
+            this.quickViewUma_ = new QuickViewUma(
+                assert(this.volumeManager_), assert(this.dialogType));
             this.quickViewController_ = new QuickViewController(
                 quickView, assert(this.metadataModel_),
                 assert(this.selectionHandler_),
                 assert(this.ui_.listContainer), assert(this.quickViewModel_),
                 assert(this.taskController_),
                 fileListSelectionModel,
                 assert(this.quickViewUma_));
             this.metadataBoxController_ = new MetadataBoxController(
                 this.metadataModel_, quickView.getFilesMetadataBox(),
                 quickView, this.quickViewModel_, this.fileMetadataFormatter_);
@@ skipping 902 matching lines @@
   FileManager.prototype.debugMe = function() {
     var out = 'Debug information.\n';
 
     out += '1. VolumeManagerWrapper\n' +
         this.volumeManager_.toString() + '\n';
 
     out += 'End of debug information.';
     console.log(out);
   };
 })();