Add "learn more" links to SSL and SB interstitials

components/security_interstitials/core/browser/resources/interstitial_v2.js

 // 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.
 
 // This is the shared code for the new (Chrome 37) security interstitials. It is
 // used for both SSL interstitials and Safe Browsing interstitials.
 
 var expandedDetails = false;
 var keyPressState = 0;
 
-// Should match SecurityInterstitialCommands in security_interstitial_page.h
+// Should match security_interstitials::SecurityInterstitialCommands
 var CMD_DONT_PROCEED = 0;
 var CMD_PROCEED = 1;
 // Ways for user to get more information
 var CMD_SHOW_MORE_SECTION = 2;
 var CMD_OPEN_HELP_CENTER = 3;
 var CMD_OPEN_DIAGNOSTIC = 4;
 // Primary button actions
 var CMD_RELOAD = 5;
 var CMD_OPEN_DATE_SETTINGS = 6;
 var CMD_OPEN_LOGIN = 7;
@@ skipping 124 matching lines @@
     // Captive portal page isn't overridable.
     $('proceed-link').addEventListener('click', function(event) {
       sendCommand(CMD_PROCEED);
     });
   } else if (!ssl) {
     $('final-paragraph').classList.add('hidden');
   }
 
   if (ssl && overridable) {
     $('proceed-link').classList.add('small-link');
-  } else if ($('help-link')) {
-    // Overridable SSL page doesn't have this link.
-    $('help-link').addEventListener('click', function(event) {
-      if (ssl || loadTimeData.getBoolean('phishing'))
-        sendCommand(CMD_OPEN_HELP_CENTER);
-      else
-        sendCommand(CMD_OPEN_DIAGNOSTIC);
+  }
+
+  if ($('diagnostic-link')) {
+    $('diagnostic-link').addEventListener('click', function(event) {
+      sendCommand(CMD_OPEN_DIAGNOSTIC);
     });
   }
 
+  if ($('learn-more-link')) {
+    $('learn-more-link').addEventListener('click', function(event) {
+      sendCommand(CMD_OPEN_HELP_CENTER);
+    });
+  }
+
   if (captivePortal) {
     // Captive portal page doesn't have details button.
     $('details-button').classList.add('hidden');
   } else {
     $('details-button').addEventListener('click', function(event) {
       var hiddenDetails = $('details').classList.toggle('hidden');
 
       if (mobileNav) {
         // Details appear over the main content on small screens.
         $('main-content').classList.toggle('hidden', !hiddenDetails);
@@ skipping 21 matching lines @@
     });
   }
 
   preventDefaultOnPoundLinkClicks();
   setupExtendedReportingCheckbox();
   setupSSLDebuggingInfo();
   document.addEventListener('keypress', handleKeypress);
 }
 
 document.addEventListener('DOMContentLoaded', setupEvents);