Implement sideload wipeout for Extensions.

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. */
 
 html.loading * {
   -webkit-transition-duration: 0 !important;
 }
 
 /* Developer mode */
 
@@ skipping 112 matching lines @@
   white-space: normal;
 }
 
 .extension-details {
   -webkit-box-flex: 1;
   -webkit-padding-start: 55px;
 }
 
 .extension-description,
 .extension-list-item-wrapper.inactive-extension .extension-details,
+.location-text,
 .enable-checkbox input:disabled + .enable-checkbox-text {
   color: rgb(151, 156, 160);
 }
 
 .enable-controls {
   /* Matches right: position of dev controls toggle. */
   -webkit-margin-end: 20px;
   position: relative;
 }
 
@@ skipping 79 matching lines @@
 #dropTargetOverlay {
   color: rgb(48, 57, 66);
   font-size: 18px;
   text-align: center;
 }
 
 #dropTargetOverlay div {
   margin: 1em;
 }
 
+/* Disabled extensions banner and related elements. */
+
+.page:not(.sideload-wipeout) #sideload-wipeout-banner {
+  display: none;
+}
+
+.extension-disable-reason {
+  padding-left: 12px;
+}
+
+.location-text {
+  display: block;
+  width: 100px;
+}
+
 /* Trash */
 
 #extension-settings .trash {
   -webkit-transition: opacity 200ms;
   height: 22px;
   opacity: 0.8;
   position: absolute;
   right: 0;
   top: 3px;
   vertical-align: middle;
@@ skipping 18 matching lines @@
 
 /* Managed mode */
 
 .page:not(.managed-mode) #managed-mode-banner {
   display: none;
 }
 
 .managed-mode .more-extensions-link {
   display: none;
 }