Revert the merge of CrossSiteResourceHandler and NavigationResourceThrottle.

chrome/browser/extensions/chrome_content_browser_client_extensions_part.cc

 // Copyright 2014 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/extensions/chrome_content_browser_client_extensions_part.h"
 
 #include <stddef.h>
 
 #include <set>
 
@@ skipping 438 matching lines @@
           new_extension->id(), site_instance->GetProcess()->GetID()))
     return true;
 
   // Otherwise, swap BrowsingInstances if current_extension and new_extension
   // differ.
   return current_extension != new_extension;
 }
 
 // static
 bool ChromeContentBrowserClientExtensionsPart::ShouldSwapProcessesForRedirect(
-    content::BrowserContext* browser_context,
+    content::ResourceContext* resource_context,
     const GURL& current_url,
     const GURL& new_url) {
+  ProfileIOData* io_data = ProfileIOData::FromResourceContext(resource_context);
   return CrossesExtensionProcessBoundary(
-      ExtensionRegistry::Get(browser_context)->enabled_extensions(),
+      io_data->GetExtensionInfoMap()->extensions(),
       current_url, new_url, false);
 }
 
 // static
 bool ChromeContentBrowserClientExtensionsPart::AllowServiceWorker(
     const GURL& scope,
     const GURL& first_party_url,
     content::ResourceContext* context,
     int render_process_id,
     int render_frame_id) {
@@ skipping 211 matching lines @@
     }
   }
 }
 
 void ChromeContentBrowserClientExtensionsPart::ResourceDispatcherHostCreated() {
   content::ResourceDispatcherHost::Get()->RegisterInterceptor(
       "Origin", kExtensionScheme, base::Bind(&OnHttpHeaderReceived));
 }
 
 }  // namespace extensions