[Files.app] Refinement events of suggest app dialog

chrome/browser/resources/file_manager/css/file_manager.css

 /* 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. */
 
 /* Special attribute used in HTML to hide elements. */
 body[type='folder'] [invisibleif~='folder'],
 body[type='upload-folder'] [invisibleif~='upload-folder'],
 body[type='saveas-file'] [invisibleif~='saveas-file'],
 body[type='open-file'] [invisibleif~='open-file'],
 body[type='open-multi-file'] [invisibleif~='open-multi-file'],
@@ skipping 1842 matching lines @@
   /* Entire height: 44px (content-box 22px + padding 11px * 2) */
   font-size: 16px;
   height: 22px;
   margin: 0;
   padding: 11px 18px;
 }
 
 #suggest-app-dialog #webview-container {
   border-bottom: solid 2px #bbb;
   border-top: solid 2px #bbb;
+  transition: height 200ms ease;
+}
+
+#suggest-app-dialog #webview-container:not(.loaded) webview {
+  visibility: hidden;
 }
 
 #suggest-app-dialog .cr-dialog-buttons,
 #suggest-app-dialog .cr-dialog-text,
 #suggest-app-dialog .cr-dialog-ok,
 #suggest-app-dialog .cr-dialog-cancel {
   display: none;
 }
 
 #suggest-app-dialog #buttons {
@@ skipping 62 matching lines @@
 }
 
 .share-dialog-webview-wrapper:not(.loaded) .share-dialog-webview {
   visibility: hidden;
 }
 
 .share-dialog-frame .cr-dialog-text,
 .share-dialog-frame .cr-dialog-buttons {
   display: none;
 }