Use ThreadChecker rather than DCHECK_CURRENTLY_ON.

chrome/browser/profiles/profile_impl.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/profiles/profile_impl.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 1061 matching lines @@
   // KeyedService is trying to create a RequestContext at startup,
   // but SSLConfigServiceManager is not initialized until DoFinalInit() which is
   // invoked after all KeyedServices have been initialized (see
   // http://crbug.com/171406).
   DCHECK(ssl_config_service_manager_) <<
       "SSLConfigServiceManager is not initialized yet";
   return ssl_config_service_manager_->Get();
 }
 
 HostContentSettingsMap* ProfileImpl::GetHostContentSettingsMap() {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
   if (!host_content_settings_map_.get()) {
     host_content_settings_map_ = new HostContentSettingsMap(GetPrefs(), false);
   }
   return host_content_settings_map_.get();
 }
 
 content::BrowserPluginGuestManager* ProfileImpl::GetGuestManager() {
 #if defined(ENABLE_EXTENSIONS)
   return extensions::GuestViewManager::FromBrowserContext(this);
 #else
@@ skipping 295 matching lines @@
 ProfileImpl::CreateDomainReliabilityMonitor(PrefService* local_state) {
   domain_reliability::DomainReliabilityService* service =
       domain_reliability::DomainReliabilityServiceFactory::GetInstance()->
           GetForBrowserContext(this);
   if (!service)
     return scoped_ptr<domain_reliability::DomainReliabilityMonitor>();
 
   return service->CreateMonitor(
       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO));
 }