Add experimental versions of the malware interstitial

chrome/browser/resources/ssl/interstitial_v2.css

 /* Copyright 2014 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. */
 
 a {
   color: #585858;
 }
 
 body {
   background-color: #f7f7f7;
@@ skipping 50 matching lines @@
 }
 
 h1 {
   -webkit-margin-after: 16px;
   color: #585858;
   font-size: 1.6em;
   font-weight: normal;
   line-height: 1.25em;
 }
 
+h2 {
+  font-size: 1.2em;
+  font-weight: normal;
+}
+
 .hidden {
   display: none;
 }
 
 .icon {
   background-repeat: no-repeat;
   background-size: 100%;
   height: 72px;
   margin: 0 0 40px;
   width: 72px;
@@ skipping 24 matching lines @@
   width: 100%;
 }
 
 #opt-in-label {
   -webkit-margin-start: 32px;
 }
 
 .safe-browsing a,
 .safe-browsing #details,
 .safe-browsing #details-button,
-.safe-browsing h1 {
+.safe-browsing h1,
+.safe-browsing h2 {
   color: white;
 }
 
 .safe-browsing button {
   background-color: rgb(206, 52, 38);
   border: 1px solid white;
 }
 
 .safe-browsing button:active {
   background-color: rgb(206, 52, 38);
@@ skipping 103 matching lines @@
   }
 
   #malware-opt-in {
     margin-top: 24px;
   }
 
   .nav-wrapper {
     margin-top: 30px;
   }
 }