diff -ur qtwebengine-opensource-src-5.6.0-beta/src/3rdparty/chromium/net/socket/ssl_client_socket_openssl.cc 
qtwebengine-opensource-src-5.6.0-beta-chimera-nss-init/src/3rdparty/chromium/net/socket/ssl_client_socket_openssl.cc
--- qtwebengine-opensource-src-5.6.0-beta/src/3rdparty/chromium/net/socket/ssl_client_socket_openssl.cc	2015-12-10 18:17:21.000000000 +0100
+++ qtwebengine-opensource-src-5.6.0-beta-chimera-nss-init/src/3rdparty/chromium/net/socket/ssl_client_socket_openssl.cc	2016-01-14 
17:11:38.432633534 +0100
@@ -57,6 +57,10 @@
 #include "net/ssl/ssl_platform_key.h"
 #endif
 
+#if defined(USE_NSS_CERTS) || defined(OS_IOS)
+#include "net/cert_net/nss_ocsp.h"
+#endif
+
 namespace net {
 
 namespace {
@@ -795,6 +799,14 @@
   DCHECK(!ssl_);
   DCHECK(!transport_bio_);
 
+#if defined(USE_NSS_CERTS) || defined(OS_IOS)
+  if (ssl_config_.cert_io_enabled) {
+    // TODO(davidben): Move this out of SSLClientSocket. See
+    // https://crbug.com/539520.
+    EnsureNSSHttpIOInit();
+  }
+#endif
+
   SSLContext* context = SSLContext::GetInstance();
   crypto::OpenSSLErrStackTracer err_tracer(FROM_HERE);