cros: Defer file selection callback until the window closes.

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 3685 matching lines @@
       if (name.substring(0, text.length).toLowerCase() == text) {
         this.currentList_.selectionModel.selectedIndexes = [index];
         return;
       }
     }
 
     this.textSearchState_.text = '';
   };
 
   /**
-   * Handle a click of the cancel button.  Closes the window.  Does not return.
+   * Handle a click of the cancel button.  Closes the window.
    * TODO(jamescook): Make unload handler work automatically, crbug.com/104811
    *
    * @param {Event} event The click event.
    */
   FileManager.prototype.onCancel_ = function(event) {
+    chrome.fileBrowserPrivate.cancelDialog();
     this.onUnload_();
-    // Closes the window and does not return.
-    chrome.fileBrowserPrivate.cancelDialog();
+    window.close();
   };
 
   /**
-   * Selects a file.  Closes the window.  Does not return.
+   * Selects a file.  Closes the window.
    * TODO(jamescook): Make unload handler work automatically, crbug.com/104811
    *
    * @param {string} fileUrl The filename as a URL.
    * @param {number} filterIndex The integer file filter index.
    */
   FileManager.prototype.selectFile_ = function(fileUrl, filterIndex) {
+    chrome.fileBrowserPrivate.selectFile(fileUrl, filterIndex);
     this.onUnload_();
-    // Closes the window and does not return.
-    chrome.fileBrowserPrivate.selectFile(fileUrl, filterIndex);
+    window.close();
   };
 
   /**
-   * Selects multiple files.  Closes the window.  Does not return.
+   * Selects multiple files.  Closes the window.
    * TODO(jamescook): Make unload handler work automatically, crbug.com/104811
    *
    * @param {Array.<string>} fileUrls Array of filename URLs.
    */
   FileManager.prototype.selectFiles_ = function(fileUrls) {
+    chrome.fileBrowserPrivate.selectFiles(fileUrls);
     this.onUnload_();
-    // Closes the window and does not return.
-    chrome.fileBrowserPrivate.selectFiles(fileUrls);
+    window.close();
   };
 
   /**
    * Handle a click of the ok button.
    *
    * The ok button has different UI labels depending on the type of dialog, but
    * in code it's always referred to as 'ok'.
    *
    * @param {Event} event The click event.
    */
@@ skipping 210 matching lines @@
           });
       }, onError);
 
       function onError(err) {
         console.log('Error while checking free space: ' + err);
         setTimeout(doCheck, 1000 * 60);
       }
     }
   }
 })();