Call GetSSLConfig on the IO thread.

chrome/browser/net/ssl_config_service_manager_pref.cc

 // 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.
 #include "chrome/browser/net/ssl_config_service_manager.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 101 matching lines @@
   // new config information.
   void SetNewSSLConfig(const net::SSLConfig& new_config);
 
   // Cached value of prefs, should only be accessed from IO thread.
   net::SSLConfig cached_config_;
 
   DISALLOW_COPY_AND_ASSIGN(SSLConfigServicePref);
 };
 
 void SSLConfigServicePref::GetSSLConfig(net::SSLConfig* config) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
   *config = cached_config_;
 }
 
 bool SSLConfigServicePref::SupportsFastradioPadding(const GURL& url) {
   return google_util::IsGoogleHostname(url.host(),
                                        google_util::ALLOW_SUBDOMAIN);
 }
 
 void SSLConfigServicePref::SetNewSSLConfig(
     const net::SSLConfig& new_config) {
@@ skipping 181 matching lines @@
 // static
 SSLConfigServiceManager* SSLConfigServiceManager::CreateDefaultManager(
     PrefService* local_state) {
   return new SSLConfigServiceManagerPref(local_state);
 }
 
 // static
 void SSLConfigServiceManager::RegisterPrefs(PrefRegistrySimple* registry) {
   SSLConfigServiceManagerPref::RegisterPrefs(registry);
 }