`<link rel=preload>` with no `as` should be subject to connect-src

third_party/WebKit/Source/core/loader/DocumentLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 169 matching lines @@
         break;
     case Resource::Media:
         resource = RawResource::fetchMedia(request, fetcher());
         break;
     case Resource::TextTrack:
         resource = RawResource::fetchTextTrack(request, fetcher());
         break;
     case Resource::ImportResource:
         resource = RawResource::fetchImport(request, fetcher());
         break;
-    case Resource::LinkSubresource:
+    case Resource::LinkPreload:
         resource = RawResource::fetch(request, fetcher());
         break;
     default:
         ASSERT_NOT_REACHED();
     }
 
     if (resource)
         fetcher()->preloadStarted(resource.get());
     return resource;
 }
@@ skipping 645 matching lines @@
 {
     m_writer = createWriterFor(ownerDocument, init, mimeType(), m_writer ? m_writer->encoding() : emptyAtom, true, ForceSynchronousParsing);
     if (!source.isNull())
         m_writer->appendReplacingData(source);
     endWriting(m_writer.get());
 }
 
 DEFINE_WEAK_IDENTIFIER_MAP(DocumentLoader);
 
 } // namespace blink