We have to do EV certificate verification for every resource...

chrome/browser/net/preconnect.cc

 // Copyright (c) 2010 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.
 
 #include "chrome/browser/net/preconnect.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/string_util.h"
 #include "chrome/browser/profile.h"
@@ skipping 82 matching lines @@
       NOTREACHED();
       break;
   }
 
   // Setup the SSL Configuration.
   ssl_config_.reset(new net::SSLConfig());
   session->ssl_config_service()->GetSSLConfig(ssl_config_.get());
   if (session->http_stream_factory()->next_protos())
     ssl_config_->next_protos = *session->http_stream_factory()->next_protos();
 
-  // All preconnects should be for main pages.
+  // All preconnects should perform EV certificate verification.
   ssl_config_->verify_ev_cert = true;
 
   proxy_info_.reset(new net::ProxyInfo());
   net::StreamFactory* stream_factory = session->http_stream_factory();
   stream_request_.reset(
       stream_factory->RequestStream(request_info_.get(), ssl_config_.get(),
                                     proxy_info_.get(), session, this,
                                     net_log_));
 }
 
@@ skipping 13 matching lines @@
 void Preconnect::OnNeedsProxyAuth(const net::HttpResponseInfo& proxy_response,
                                   net::HttpAuthController* auth_controller) {
   delete this;
 }
 
 void Preconnect::OnNeedsClientAuth(net::SSLCertRequestInfo* cert_info) {
   delete this;
 }
 
 }  // chrome_browser_net