Postpone connecting to GData even more, provide progress indication.

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.
  */
 
 /* Outer frame of the dialog. */
 body {
    -webkit-box-flex: 1;
    -webkit-box-orient: vertical;
@@ skipping 1077 matching lines @@
   height: 100%;
   border: none;
   z-index: 100;
 }
 
 menu.file-context-menu {
   z-index: 4;
 }
 
 input.common.pin[type="checkbox"]:checked::after {
+  position: relative;
   content: url('../images/pin.png');
   left: 3px;
   top: -4px;
 }
 
 div.offline {
   -webkit-box-pack: center;
   display: -webkit-box;
 }
 
 div.offline > * {
   -webkit-box-align: center;
   display: -webkit-box;
 }
+
+/* Message panel for unmounted GData */
+.dialog-container:not([unmounted]) .dialog-body > div.unmounted-panel,
+.dialog-container[unmounted] .dialog-body > div:not(.unmounted-panel) {
+  display: none;
+}
+
+div.unmounted-panel {
+  padding-top: 20px;
+  padding-left: 50px;
+}
+
+div.unmounted-panel > * {
+  height: 22px;
+  margin-bottom: 10px;
+}
+
+div.unmounted-panel > div {
+  display: -webkit-box;
+  -webkit-box-orient: horizontal;
+  -webkit-box-pack: start;
+  -webkit-box-align: center;
+}
+
+.unmounted-panel > .gdata.loading,
+.unmounted-panel > .gdata.error {
+  margin-left: -30px;
+  padding-left: 30px;

[dgozman, 2012/03/26 16:30:21]

Fun stuff :)

[Vladislav Kaznacheev, 2012/03/27 09:25:35]

Yeah. I added a comment explaining the purpose.
On 2012/03/26 16:30:21, dgozman wrote:

+}
+
+.unmounted-panel > .gdata.loading {
+  background-image: url(../images/spinner.svg);
+  background-repeat: no-repeat;
+  background-position: 0 center;
+}
+
+.unmounted-panel:not([loading]) > .gdata.loading,
+.unmounted-panel:not([error]) > .gdata.error,
+.unmounted-panel:not([retry]) > .gdata.retry,
+.unmounted-panel:not([retry]) > .gdata.learn-more {
+  display: none;
+}