Restore <img> src values now that grit converts these.

chrome/browser/resources/help/help.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.
  */
 
 body {
   -webkit-user-select: text;
 }
 
 #about-container {
   -webkit-box-align: center;
   display: -webkit-box;
   margin-top: 10px;
 }
 
-#help-product-logo {
-  /* TODO: Remove once http://crbug.com/135179 is fixed */
-  content: url('chrome://theme/IDR_PRODUCT_LOGO_32');
-}
-
 #product-description {
   -webkit-margin-start: 10px;
 }
 
 #version-container {
   margin-top: 30px;
 }
 
 #update-buttons-container {
   margin-top: 5px;
@@ skipping 68 matching lines @@
 #more-info-container {
   -webkit-transition: all 500ms linear;
   height: 0;
   margin-bottom: 0;
   overflow: hidden;
 }
 
 #last-updated-container.empty {
   visibility: hidden;
 }