Async Safe Browsing check, on mobile

chrome/browser/renderer_host/safe_browsing_resource_throttle_factory.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/renderer_host/safe_browsing_resource_throttle_factory.h"
 
 #include "content/public/browser/resource_context.h"
 
 // Compiling this file only makes sense if SAFE_BROWSING_SERVICE is enabled.
 // If the build is breaking here, it probably means that a gyp or gn file has
@@ skipping 22 matching lines @@
 // static
 ResourceThrottle* SafeBrowsingResourceThrottleFactory::Create(
     net::URLRequest* request,
     content::ResourceContext* resource_context,
     content::ResourceType resource_type,
     SafeBrowsingService* service) {
   if (factory_)
     return factory_->CreateResourceThrottle(
         request, resource_context, resource_type, service);
 
-#if defined(SAFE_BROWSING_DB_LOCAL) || defined(SAFE_BROWSING_DB_REMOTE)
-  // Throttle consults a local or remote database before proceeding.
-  return new SafeBrowsingResourceThrottle(request, resource_type, service);
+  return CreateWithoutRegisteredFactory(request, resource_type, service);
+}
+
+ResourceThrottle*
+SafeBrowsingResourceThrottleFactory::CreateWithoutRegisteredFactory(
+    net::URLRequest* request,
+    content::ResourceType resource_type,
+    SafeBrowsingService* service) {
+#if defined(SAFE_BROWSING_DB_LOCAL)
+  // Throttle consults a local database before starting the resource request.
+  return new SafeBrowsingResourceThrottle(request, resource_type, service,
+                                          true /* defer_at_start */);
+#elif defined(SAFE_BROWSING_DB_REMOTE)
+  // Throttle consults a remote database before processing the response.
+  return new SafeBrowsingResourceThrottle(request, resource_type, service,
+                                          false /* defer_at_start */);
 #else
   return NULL;
 #endif
 }