Creates GCP promo for ChromeOS users with no cloud printers.

chrome/browser/resources/print_preview/previewarea/preview_area.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. */
 
 #preview-area.preview-area {
   -webkit-box-flex: 1;
   -webkit-user-select: none;
   background-color: #ccc;
-  height: 100%;
   overflow: hidden;
   position: relative;
 }
 
+.preview-area-plugin-wrapper {
+  height: 100%;
+  position: absolute;
+  width: 100%;
+}
+
 #preview-area .preview-area-plugin {
   /* pluginFadeInTransitionDuration = 200ms */
   -webkit-transition: opacity 200ms linear;
   /* pluginFadeInTransitionDelay = overlayFadeOutTransitionDuration = 100ms */
   -webkit-transition-delay: 100ms;
   cursor: inherit;
   height: 100%;
   opacity: 1;
   width: 100%;
 }
@@ skipping 41 matching lines @@
   top: 50%;
 }
 
 #preview-area .preview-area-no-plugin-action-area {
   margin-top: 12px;
 }
 
 #preview-area .preview-area-open-system-dialog-button-throbber {
   vertical-align: middle;
 }