[uber] make the navigation controls an iframe

chrome/browser/resources/extensions/extensions.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.
 */
 
 
 /* Dev */
 
 .dev-open {
@@ skipping 53 matching lines @@
    for users who click, by hiding some focus outlines when the user
    clicks anywhere, but showing them when the user presses any key. */
 body.hide-some-focus-outlines .extension-zippy-container {
   outline: none;
 }
 
 /**************************************************************************/
 /* TODO(estade): rules above this line are old and should probably be
  * retired.*/
 
-body {
-  color: rgb(151, 156, 160);
-  margin-left: 27px;
-}
-
 .extension-list-item-wrapper {
   margin: 23px 0;
 }
 
 .extension-list-item {
   background-repeat: no-repeat;
   display: -webkit-box;
   min-height: 48px;
 }
 
 html[dir="rtl"] .extension-list-item {
   background-position: right;
 }
 
 .extension-title {
   -webkit-padding-end: 20px;
   color: rgb(48, 57, 66);
   font-size: 14px;
   font-weight: 500;
 }
 
 .extension-version {
   -webkit-padding-end: 7px;
   font-size: 13px;
   font-weight: 400;
 }
 
 .extension-description {
   -webkit-padding-end: 5px;
+  color: rgb(151, 156, 160);
   font-size: 13px;
   margin: 5px 0;
   white-space: normal;
 }
 
 .extension-details {
   -webkit-box-flex: 1;
   -webkit-padding-start: 55px;
 }
 
@@ skipping 27 matching lines @@
 .trash {
   -webkit-transition: opacity 200ms;
   height: 22px;
   opacity: 0.8;
   vertical-align: middle;
 }
 
 .extension-list-item:not(:hover) .trash:not(:focus) {
   opacity: 0;
 }