PlzNavigate: only allow main frame resource loads for extensions

extensions/browser/extension_protocols.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 "extensions/browser/extension_protocols.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 351 matching lines @@
   // check, since the renderer can lie about which extension has made the
   // request.
   if (extension_info_map->process_map().Contains(
       request->url().host(), info->GetChildID())) {
     return true;
   }
 
   // PlzNavigate: frame navigations to extensions have already been checked in
   // the ExtensionNavigationThrottle.
   if (info->GetChildID() == -1 &&
-      content::IsResourceTypeFrame(info->GetResourceType()) &&
+      info->GetResourceType() == content::RESOURCE_TYPE_MAIN_FRAME &&
       content::IsBrowserSideNavigationEnabled()) {
     return true;
   }
 
   // Allow the extension module embedder to grant permission for loads.
   if (ExtensionsBrowserClient::Get()->AllowCrossRendererResourceLoad(
           request, is_incognito, extension, extension_info_map)) {
     return true;
   }
 
@@ skipping 200 matching lines @@
 }
 
 std::unique_ptr<net::URLRequestJobFactory::ProtocolHandler>
 CreateExtensionProtocolHandler(bool is_incognito,
                                extensions::InfoMap* extension_info_map) {
   return base::MakeUnique<ExtensionProtocolHandler>(is_incognito,
                                                     extension_info_map);
 }
 
 }  // namespace extensions