Don't truncate image in plugins and flags pages

chrome/browser/resources/plugins.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 {
   margin: 10px;
   min-width: 47em;
 }
 
 a {
@@ skipping 13 matching lines @@
   position: relative;
 }
 
 #header h1 {
   background: -webkit-image-set(
       url('../../app/theme/default_100_percent/extensions_section.png') 1x,
       url('../../app/theme/default_200_percent/extensions_section.png') 2x)
       0 20px no-repeat;
   display: inline;
   margin: 0;
-  padding-bottom: 20px;
+  padding-bottom: 40px;
   padding-left: 75px;
   padding-top: 40px;
 }
 
 html[dir=rtl] #header h1 {
   background: -webkit-image-set(
       url('../../app/theme/default_100_percent/extensions_section.png') 1x,
       url('../../app/theme/default_200_percent/extensions_section.png') 2x)
       right no-repeat;
   padding-left: 0;
@@ skipping 199 matching lines @@
   margin-top: 0.2em;
 }
 
 .always-allow {
   -webkit-margin-start: 30px;
 }
 
 button {
   font-size: 104%;
 }